Raj Pal Sharma

Raj Pal Sharma
Panjab University · Department of Chemistry

Ph.D

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178
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Publications

Publications (178)
Article
A Zn(II) complex with two nicotinamide (nia) ligands, two chloride ions, and two co-crystallized nicotinamide molecules, [ZnCl2(nia)2].2nia, was synthesized and characterized on the basis of elemental analysis, spectroscopic techniques (UV-vis, FT-IR, ¹H and ¹³C NMR), conductivity measurements, DFT and single-crystal X-ray crystallography. The comp...
Article
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Please cite this article as: S. Kumar, R.P. Sharma, P. Venugopalan, V.S. Gondil, S. Chhibber, V. Ferretti, Synthesis and characterization of new silver(I) naphthalenedisulfonate complexes with heterocyclic N-donor ligands: packing analyses and antibacterial studies, Polyhedron (2018), doi: https://doi. Abstract Four new silver(I) naphthalenedisulph...
Article
Five new copper(II) niflumate complexes, [Cu(en)2(nif)2], 1, [Cu(unsym-dmen)(nif)2], 2, [Cu(pn)2(nif)2][Cu(pn)2(H2O)2](nif)2 3, [Cu(β-pic)2(nif)2], 4, [Cu(γ-pic)2(nif)2] 5 (where en = ethylenediamine, pn = propan-1,3-diamine, unsym-dmen = 1,1-dimethyl-ethylenediamine, β-pic = 3-methylpyridine, γ-pic = 4-methylpyridine, nif = niflumate) have been sy...
Article
Four new silver(I) naphthalenedisulphonate complexes, [Ag2(1,5-nds) (β-Pic)4]·2H2O (1), [Ag2(1,5-nds)(γ-Pic)4]·6H2O (2), [Ag2(2,6-nds) (β-Pic)4] (3) and [Ag2(2,6-nds) (γ-Pic)4]·2H2O (4) have been synthesized using appropriate starting materials at ambient temperature and normal reaction conditions and fully characterized by spectroscopic methods (F...
Article
The reaction of the copper(II) diclofenac complex [Cu(dicl)2(H2O)2] (1) (dicl = deprotonated diclofenac (Hdicl)) with the chelating N-donor ligands ethylenediamine (en), propan-1,3-diamine (pn), unsymmetrical dimethylethylene-diamine (unsym-dmen) and N,N,N',N'-tetramethylethylene-diamine (temed) in methanol-water (4:1 v/v) yielded the novel copper(...
Article
Coordination chemistry- the clothing of metal ion, is a branch of inorganic chemistry which encompasses chemistry, biology, environment and material science having a direct relevance to life of a human being. Supramolecular chemistry- looking beyond a molecule has developed as a full fledged discipline out of coordination chemistry and consists of...
Article
Two new copper(II) complexes; [Cu(temed)(p-nitro-cinnamate)2] (1), [Cu(temed)(p-methoxy-cinnamate)2] (2), where temed = N,N,N′,N’-tetramethylethylenediamine, have been synthesized by reacting appropriate starting materials using methanol-water (4:1 v/v) as solvent at room temperature. Both newly synthesized copper(II) cinnamate complexes have been...
Article
Two transition metal complexes containing copper (II) ion, dye methyl red (H-MR) and nitrogen donor ligands β/γ-picoline (β/γ-pic) have been synthesized for the first time using appropriate starting materials in methanol-water (4:1 v/v) as solvent and characterized by spectroscopic methods (UV–Vis, FT-IR) and thermogravimetric analyses. The crystal...
Article
Cadmium, an extremely toxic heavy metal, is of a major public health concern and its efficient removal from the environment is a real challenge. This work aims for a deep understanding of stable cadmium(II) chelation with a tridentate ligand to form complex salts being stabilized by cation-anion hydrogen bonding non-covalent interactions in additio...
Article
Three new hybrid inorganic-organic complexes: [Cu(dien)(pnb)2]·H2O, 1; [Cu(dien)2](pnb)2, 2; and [Cu(dien)(pnb)(H2O)](pnb)(Hpnb), 3 (where pnb = p-nitrobenzoate, dien = diethylenetriamine, tridenate N-donor ligand), have been synthesized at room temperature and characterized by spectroscopic (FT-IR, UV–Vis, EPR) methods. The structures of all newly...
Article
Reaction of hydrated copper(II) ibuprofenate with various nitrogen donor ligands, β-picoline, γ-picoline, pyrrolidine and unsymmetrical ethylenediamine (un-dmen), at room temperature in methanol:water mixture (4:1 v/v) yielded four new complexes, [Cu(Ibu)2(β-picoline)2(H2O)]; 1, [Cu(Ibu)2(γ-picoline)2(H2O)].H2O; 2, [Cu(Ibu)2(pyrrolidine)2].H2O; 3 a...
Article
Three new anhydrous [copper(II)(N-hyden)2](o-/m-/p-methoxybenzoate)2 complexes, 1-3, (where N-hyden = N-(hydroxyethyl)ethylenediamine) have been prepared by the dropwise addition of N-hyden to the hydrated copper(II) o-/m-/p-methoxybenzoate complexes suspended in a methanol-water (4:1 v/v) mixture, followed by evaporation of the resulting solution...
Article
Copper(II) ferulate was reacted with ethylenediamine (en) in methanol-water mixture, yielding single crystals of complex [Cu(en)2(H2O)2](fer) (1), (where fer = ferulate dianion) which was unequivocally characterized by physicochemical and single crystal X-ray structural studies. Copper(II) ion is octahedrally surrounded by two en and two water mole...
Article
A new anionic copper(II) complex, (MeImH)2 [Cu(pfbz)4] (1) where, MeImH = 2-methylimidazolium and pfbz = pentafluorobenzoate has been isolated by reacting copper(II) sulfate pentahydrate, pentafluorobenzoic acid and 2-methylimidazole in ethanol: water mixture in 1:2:2 molar ratio. This complex 1 has been characterized by elemental analysis, thermog...
Article
Two new copper(II) complexes of composition [Cu(en)2(H2O)2](2-phenoxybenzoate)2●H2O, 1 and [Cu(en)2(H2O)](diphenylacetate)2●3H2O, 2 (where en = ethylenediamine) have been synthesized, characterized by elemental analyses, spectroscopic techniques (UV-Vis and FT-IR), magnetic moment determination and conductance measurements and their structures have...
Article
Three novel coordination complexes of copper(II) with 2,4,5-trichlorophenoxyacetate [Cu(γ-pic)3(L)2].H2O 1, [trans-Cu(en)2(L)2].2H2O 2 and [Cu2(H2tea)2(L)2]. 2H2O 3, where L = 2,4,5-trichlorophenoxyacetate, γ-pic = γ-picoline, en = ethylenediamine, H2tea = monodeprotonated triethanolamine, were synthesized by addition of γ-picoline/ethylenediamine/...
Article
A new hybrid inorganic-organic compound [Cu(Hdien)2(H2O)2](pnb)4·4H2O (1) (where, pnb = p-nitrobenzoate), in which the tridentate ligand diethylenetriamine (dien) shows an unusual coordination behavior acting as a bidentate ligand when present in its monoprotonated form (Hdien+) has been synthesized by the reaction of copper(II) p-nitrobenzoate and...
Article
Full-text available
The trinuclear [Cu3(RCOO)4(H2TEA)2] copper(II) complexes, where RCOO(-) = 2-furoate (1), 2-methoxybenzoate (2), and 3-methoxybenzoate (3, 4), as well as dimeric species [Cu2(H2TEA)2(RCOO)2]·2H2O, have been prepared by adding triethanolamine (H3TEA) at ambient conditions to hydrated Cu(RCOO)2 salts. The newly synthesized complexes have been characte...
Article
The coordination behavior of 2-chloro-4-fluorobenzoate and 2,4-dichlorobenzoate ligands towards copper(II) ion were investigated in the presence of different nitrogen ligands. Four new copper(II) complexes, [trans-Cu(2-Cl-4-FC7H3O2)2(β-pic)2] 1, [trans-Cu(en)2(H2O)2](2-Cl-4-FC7H3O2)2, 2, [trans-Cu(2,4-Cl2C7H3O2)2(β-pic)2(H2O)2], 3 and [trans-Cu(en)...
Article
Abstract Three new copper(II) complexes trans-[Cu(β-pic)2(H2O)2(5-chloro-2-nitrobenzoate)2] 1, trans-[Cu(γ-pic)2(5-chloro-2-nitrobenzoate)2], 2 and [trans-Cu(en)2(H2O)2](5-chloro-2-nitrobenzoate)2·2H2O, 3 (where β-pic = β-picoline, γ-pic = γ-picoline and en = ethylenediamine) were prepared by the addition of β-pic, γ-pic and en, respectively, to th...
Article
Reaction of hydrated copper(II) 2-chloro-benzoate with β-/γ-picoline in methanol: water mixture (4:1 v/v) yielded polymeric [Cu(2-chlorobenzoate)2(β-picoline)2(μ-H2O)]n; 1 and monomeric [Cu(2-chlorobenzoate)2(γ-picoline)2(H2O)]; 2. The newly synthesized complexes have been characterized by elemental analyses, FT-IR spectroscopy, UV-Visible spectros...
Article
Three new hybrid inorganic-organic compounds of silver(I), Ag2(2,6-nds),1, lead(II), [Pb(2,6-nds).H2O]n, 2 and copper(II), [Cu(phen)3](2,6-nds).11H2O, 3, have been synthesized by reacting appropriate reactants in aqueous medium. All the three compounds were characterized on the basis of elemental analyses, spectroscopic techniques (FT-IR, NMR, EPR...
Article
Reaction of hydrated copper (II) 2-iodobenzoate with β/γ-picoline in methanol:water mixture (4:1, v/v) yielded two rare aqua bridged zig-zag polymers [Cu(2-iodobenzoate)2(β-picoline)2(μ-H2O)]n; 1 and [Cu(2-iodobenzoate)2(γ-picoline)2(μ-H2O)]n; 2. The newly synthesized complexes have been characterized by elemental analysis, FT-IR spectroscopy, UV-V...
Article
A new tetranuclear thallium complex, [Tl4(H2O)2(anthracene-9-carboxylate)4] was isolated by reaction of hot aqueous solution of thallium(1)sulphate with sodium salt of anthracene-9-carboxylic acid in water taken in appropriate stoichiometric ratio. The newly synthesized complex was characterized by elemental analysis, thermogravimetric analysis, sp...
Article
1-(3-(1-imidazol-1-yl)propyl)-2,8,9-trioxa-5-aza-1-silabicyclo[3.3.3.0]undecane 3, with imidazole functionality containing transannular N→Si bond (2.13 Å), was synthesized by transetherification reaction of triethanolamine 1 with N-(3-propyltriethoxysilane)imidazole 2. The compound was characterized by elemental analysis, spectroscopic techniques (...
Article
A new cationic species [Cu(temed)(H2O)4]2+ has been isolated in the form of a complex 1, [Cu(temed)(H2O)4](1,5-napthalenedisulphonate)⋅2H2O (1) (where temed = N,N,N′,N′-tetramethylethylenediamine). The complex 1 was crystallized from a reaction of disodium salt of 1,5-naphthalenedisulphonic acid with equimolar quantity of CuCl2⋅2H2O and temed in me...
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Full-text available
In an endeavor to study how a polydentate nitrogen donor ligand affects the magnetic properties of copper(II) methoxybenzoates, three novel complexes of copper(II) were investigated. [Cu2(H2tea)2(o-methoxybenzoate)2], [Cu2(H2tea)2(m-methoxybenzoate)2]·2H2O and [Cu2(H2tea)2(p-methoxybenzoate)2]·2H2O (where H2tea = mono-deprotonated triethanolamine)...
Article
Reaction of copper(II) 2-bromobenzoate with β/γ-picoline in methanol–water mixture (4:1 v/v) yielded two isostructural aqua bridged linear polymers [Cu(2-bromobenzoate)2(β-picoline)2(μ-H2O)]n; 1 and [Cu(2-bromobenzoate)2(γ-picoline)2(μ-H2O)]n; 2 which belong to a rare class. The newly synthesized complexes have been characterized by elemental analy...
Article
Full-text available
Three novel copper(II) 2-nitrobenzoate complexes, [Cu(γ-pic)2(2-nitrobenzoate)2] 1, [Cu(β-pic)2(2-nitrobenzoate)2(H2O)2] 2 and [Cu2(H2tea)2(2-nitrobenzoate)2]·2(H2O) 3 (where γ-pic = 4-methylpyridine, β-pic = 3-methylpyridine and H2tea = mono deprotonated triethanolamine), were isolated by addition of γ-pic, β-pic and H3tea to the hydrated copper(I...
Article
Two mononuclear copper(II) complexes of composition [trans-Cu(en)(2)(H2O)(2)](p-methoxy cinnamate)(2), 1 and [trans-Cu(en)(2)(H2O)(2)](p-nitrocinnamate)(2)center dot 2H(2)O, 2 (where en = ethylenediamine) were synthesized by the addition of strong chelating base ethylenediamine to hydrated Cu(II) cinnamates, Cu(p-methoxy/p-nitrocinnamate)(2)center...
Article
To explore the variation in the supramolecular architecture of cobalt(III)–1,10-phenanthroline–aryl carboxylate complexes in tune with aryl substitution, eight new supramolecular inorganic–organic framework complexes have been synthesized. These have the general formula [Co(phen)2CO3]L·nH2O, where phen = 1,10-phenanthroline, L = 3-nitrobenzoate (P,...
Article
In an effort to study the binding of substituted arylsulphonates by cationic cobalt(III) complex [Co(phen)2CO3]+, two complex salts [Co(phen)2CO3](4-chlorobenzenesulphonate)⋅3H2O, 1 and [Co(phen)2CO3] (2,4-dinitrobenzenesulphonate)⋅H2O, 2 have been synthesized. These complex salts were characterized by elemental analysis, solubility product, conduc...
Article
1-Isothiocyanato-3,7,10-trimethyl-5-aza-2,8,9-trioxa-1-silabicyclo[3.3.3.0]undecane 3, containing transannular N → Si bond, has been synthesized by transesterification reaction of trisisopropanolamine and triethoxyisothiocyanato silane. To study the reactivity of exocyclic NCS group, 3 was treated with methyliodide, triethylsilane and aniline. All...
Article
3-aminopropylsilatrane (1) was crystallized as its hydrochlo-ride salt, 3-(silatranyl)propylammonium chloride (2), which was confirmed by spectroscopic and X-ray diffraction studies. Singlecrystal X-ray data revealed orthorhombic crystal system (space group = P212121) with three molecules packed in an asymmetric unit cell. Herein, a special emphasi...
Article
In the present study, four new Co(II/III) metal complexes, [Co(phen)3]S4O6·2H2O (1), [Co(phen)3]S4O6·7H2O (2), [Co(phen)3]2(S4O6)3·6.5H2O (3) and [Co(phen)3]S2O3·9H2O (4), have been synthesized and characterized by elemental analysis, TGA and various spectroscopic techniques. In the case of 1 and 2, an unexpected redox reaction took place and the c...
Article
Rare monomeric as well as dimeric Cu(II) complexes, [Cu2(β-pic)4L4][Cu(β-pic)2L2(H2O)2]·2H2O (1), (where L = cinnamate and β-pic = β-picoline) in one single crystal have been synthesized by the reaction of copper(II) cinnamate and excess of β-pic while a monomeric complex [Cu(py)2L2(H2O)]·py (2) was obtained in a similar reaction by using py (py =...
Article
Two new copper(II) complexes comprising of coordinated and non-coordinated p-toluenesulfonate, [trans-Cu(γ-pic)2(H2O)4](pts)2·2H2O, 1 and [trans-Cu(γ-pic)4(pts)2]·2H2O, 2 (where p-toluenesulfonate = pts and γ-picoline = γ-pic) have been isolated from the same reaction mixture. These complexes have been characterized by spectroscopic techniques, mol...
Article
Two new discrete anionic species, [Cd2Cl7]3– and [Cd2Br7]3–, have been isolated in the form of cobalt(III) complex salts, [Co(phen)3][Cd2Cl7]·3H2O (1) and [Co(phen)3][Cd2Br7]·2H2O (2). The complex salts have been characterized by spectroscopic techniques and other investigations like TGA, solubility product measurements, conductance measurements, l...
Article
A new anion [CdBr4(C7H5O2)]3 −, where C7H5O2 = benzoate, has been isolated for the first time in the form of complex salt [Co(en)3] [CdBr4(C7H5O2)]·H2O(1). This is the first example where Cd(II) centre is coordinated by both inorganic and organic ligands and existing as discrete unit. The complex salt is characterized by spectroscopic techniques an...
Article
Two new cobalt(III) complex salts, [Co(en)3]2[CdBr6]·Br2·2H2O (1) and [Co(en)3]2[trans-CdBr4Cl2]·Br2·2H2O (2) have been synthesized while attempting to synthesize [CdBr5]3- complex ion. The newly synthesized complex salts have been characterized by elemental analyses, spectroscopic techniques (e.g. UV/Visible, IR and NMR), solubility product, condu...
Article
A novel mixed ligand cobalt(III) complex, [Co(phen)2(Hbiim)]Cl2·10H2O, has been utilized in the syntheses of three halogenocadmate(II) complexes [Co(phen)2(Hbiim)][CdCl4]·2H2O (1), [Co(phen)2(Hbiim)][CdBr4]·1.5H2O (2) and [Co(phen)2Hbiim][CdI4]·C3H6O·0.5H2O (3) (where phen=1,10-phenanthroline and Hbiim=mono-anionic 2,2′-biimidazole). The complex sa...
Article
In an effort to understand the role of non-covalent interactions in binding of biologically and commercially important non-coordinating anions like I−, ClO4- and IO4-, four new mixed ligand Co(III) complex salts; [Co(phen)2Hbiim]Cl2·10H2O (1), [Co(phen)2Hbiim]I2·3H2O (2), [Co(phen)2Hbiim](ClO4)2 (3) and [Co(phen)2Hbiim] (IO4)2·0.5H2O (4) (where phe...
Article
A new mixed ligand cobalt(III) complex salt [Co(phen)(H2biim)2]Cl3 (1) (where phen=1,10-phenanthroline, H2biim=2,2′-biimidazole) has been synthesized for the first time. In an effort to explore this new cationic complex [Co(phen)(H2biim)2]3+ as binding agent for fluoroanions, complex salt [Co(phen)(H2biim)2](PF6)2Cl·2H2O(2) has been synthesized and...
Article
The syntheses, physical, spectroscopic characterizations and crystal structures of [Co(phen)2CO3]ClO3, [Co(phen)2CO3]BrO3·3.5H2O and [Co(phen)2CO3]IO4 are described (phen = 1,10-phenanthroline, C12H8N2). The crystal structures feature “synergistic” directional bonding interactions including cation-to-anion C–H⋯O(anion) bonds and anion-to-cation Cl⋯...
Article
In an effort to utilize the cationic cobalt(III) complex as a binding agent for fluoroanions, the reaction of carbonatobis(1,10-phenanthroline)cobalt(III) chloride with sodium tetrafluoroborate and sodium hexafluorophosphate in water (1:1 M ratio) leads to the formation of [Co(phen)2CO3]BF4 (1) and [Co(phen)2CO3]PF6·3H2O (2). These cobalt(III) comp...
Article
In an attempt to formulate spectra–structural relationship to provide information on coordination around copper(II) ion in aqueous solution, two novel copper(II) complexes were investigated. [Cu(py)2(H2O)4](p-toluenesulfonate)2, 1 and [Cu(β-pic)2(H2O)4](p-toluenesulfonate)2, 2(py=pyridine, β-pic=β-picoline) were isolated by addition of py and β-pic...
Article
The present work aims at the synthesis of various novel silatranes bearing substituted urea functionality. Nucleophilic addition of various amines (morpholine, aniline, ethylenediamine and 3-aminopropyltriethoxysilane) to 3-isocyanatopropyltriethoxysilane resulted in the four triethoxysilanes; N-[3-(triethoxysilyl)propyl]morpholine-4-carboxylic aci...
Article
Two novel copper(II) complexes, [Cu(2-Cl-5-FC7H3O2)2(β-pic)2(H2O)2] 1 and [Cu(en)2(H2O)2] (2-Cl-5-F-C7H3O2)22 (where β-pic = β-picoline, en = ethylenediamine) were isolated by addition of β-picoline and ethylenediamine respectively to the hydrated copper(II) aryl carboxylate, Cu(2-Cl-5-F-C7H3O2)2 suspended in water–methanol (1:4) mixture. The newly...
Article
A new anionic species [HgBr4Cl]3− has been isolated in the form of complex salt, [Co(NH3)6][HgBr4Cl] (1). The complex salt was crystallized from a solution of hexamminecobalt(III) chloride and potassium tetrabromidomercurate(II) in aqueous medium in 1:1 molar ratio. This complex salt has been characterized by elemental analyses, spectroscopic techn...
Article
The crystal size and shape of the silicoaluminophosphate molecular sieve SAPO-34 have been effectively controlled in the reaction system of Al2O3–P2O5–SiO2–TEAOH–H2O under microwave radiations. Nano sheet-like SAPO-34 crystals are obtained when using colloidal silica as the silica source. When TEOS is used as the source of silica, homogeneous SAPO-...
Article
Reaction of 3-chloropropyltriethoxysilane (1) with sodium azide (2) in the presence of phase transfer catalyst, tert-butylammonium bromide provided 3-azidopropyltriethoxysilane (3). This undergoes transesterification reaction with triethanolamine in the presence of KOH to form a new silatrane 3-azidopropylsilatrane (4). Multinuclear NMR (1H, 13C an...
Article
To explore the role of weak interactions in aryldicarboxylate binding, the hydrated complex salt, [Co(phen)2CO3]2(C8H4O4)·15H2O, 1, was synthesized and characterized by elemental analyses, spectroscopic studies (IR, UV/Visible, 1H, 13C and 59Co NMR), physical measurements and single-crystal diffraction. Compound 1 crystallizes in space group and th...
Article
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Two new complex salts containing 2,5-substituted benzoate ions, [Co(phen)2CO3]2(C7H3O2FCl)Cl·11H2O (1) and [Co(phen)2CO3](C7H3NO4Cl)·6H2O (2) (where phen = 1,10-phenanthroline, C7H3O2FCl = 2-chloro-5-fluorobenzoate (cfbz) and C7H3NO4Cl = 2-chloro-5-nitrobenzoate(cnbz)) were synthesized by reacting carbonatobis(1,10-phenanthroline)cobalt(III) chlori...
Article
Utility of second sphere interactions for the isolation of a new polycadmate(II) anion is demonstrated through the synthesis of [Co(NH3)6]2[Cd3Br10(H2O)2]Br2·2H2O. The anion is stabilized through the unison of large number of N–H⋯Br second sphere interactions. The packing analysis delineates that the polycadmate(II) anion is not discrete but form p...
Article
Two new complex salts containing 2,5-substituted benzoate ions, [Co(phen)2CO3]2 (C7H 3O2FCl)Cl·11H2O (1) and [Co(phen) 2CO3](C7H3NO4Cl) ·6H2O (2) (where phen = 1,10-phenanthroline, C 7H3O2FCl = 2-chloro-5-fluorobenzoate(cfbz) and C7H3NO4Cl = 2-chloro-5-nitrobenzoate(cnbz)) were synthesized by reacting carbonatobis(1,10-phenanthroline)cobalt(III) ch...
Article
Two new complex salts containing 2,5-substituted benzoate ions, [Co(phen)(2)CO3](2) (C7H3O2FCl)Cl center dot 11H(2)O (1) and [Co(phen)(2)CO3](C7H3NO4Cl)center dot 6H(2)O (2) (where phen = 1,10-phenanthroline, C7H3O2FCl = 2-chloro-5-fluorobenzoate (cfbz) and C7H3NO4Cl = 2-chloro-5-nitrobenzoate(cnbz)) were synthesized by reacting carbonatobis(1,10-p...
Article
Full-text available
A new complex salt of composition [Co(phen)(3)](3)(V(4)O(12))(2)Cl·27H(2)O (phen = 1,10-phenanthroline and [V(4)O(12)](4-) = tetrameric dodecaoxotetravanadate ion) was synthesized by reacting appropriate salts in aqueous medium. The complex salt has been characterized by elemental analyses, thermogravimetric analysis (TGA), cyclic voltammetry (CV),...
Article
Two new copper(II) complexes of composition [trans-Cu(en)2(H2O)2](L1)2, 1 and [trans-Cu(en)2(H2O)2](L2)2, 2 (L1=3-methoxybenzoate, L2=3,4,5-trimethoxybenzoate) were obtained by the addition of ethylenediamine to hydrated Cu(II) benzoates, Cu(L1/L2)2·H2O in methanol–water mixture. The newly synthesized complexes have been characterized by elemental...
Article
In an attempt to synthesize [Co(NH3)6][Hg2I7], a new cobalt(III) complex salt, [Co(NH3)6][HgI4]I·H2O (1) was crystallized from a solution of hexaamminecobalt(III) bromide and potassium heptaiodatodimercurate(II) in aqueous medium in 1:1M ratio. It has been characterized by elemental analyses, spectroscopic techniques (e.g. UV/visible, IR), solubili...
Article
Three new mercury(II) halide complex salts, [C7H6N3O2] HgX3·H2O (1: X=Cl, 2: X=Br, 3: X=I) synthesized by reacting stoichiometric quantities of appropriate reactants in aqueous medium, have been investigated by FT IR, NQR spectroscopies, and single crystal X-ray diffractions. The crystal structures of 1 and 2 are isostructural with orthorhombic sys...
Article
The syntheses, physical characterization and crystal structures of two new molecular copper(II) complexes of composition [Cu(C5H5N)2(C7F5O2)2] (1) and [Cu(C5H5N)2(C7F5O2)2(H2O)] (2) (C5H5N=py=pyridine and C7F5O2−=pfb=pentafluorobenzoate) are reported. Single-crystal X-ray structure determinations revealed that in 1, the Cu2+ ion, which lies on a cr...
Article
Two new copper(II) complexes of composition [trans-Cu(en)2(H2O)2](L1)2, 1 and [trans-Cu(en)2(H2O)2](L2)2, 2 (L1=p-toluenesulphonate, L2=5-bromo-2-methoxybenzenesulphonate) were obtained by the addition of ethylenediamine to hydrated Cu(II) sulphonates, Cu(L1/L2)2·nH2O in methanol–water solution. The newly synthesized complex salts have been charact...
Article
A novel silatrane containing Si←N bond (2.160Å), has been synthesized by the reaction of 3-aminopropylsilatrane (1), dicyclohexylcarbodiimide (2) and CS2. The structure was established by elemental analysis, spectroscopic methods (IR, 1H NMR, 13C NMR and Mass spectroscopy) and X-ray crystallography. It was correlated with theoretical studies such a...
Article
A new cobalt(III) complex salt, [Co(NH3)6][HgBr5](1) was crystallized from a solution of hexaamminecobalt(III)bromide and potassium tetrabromomercurate(II) in aqueous medium in 1:1 molar ratio. This complex salt has been characterized by elemental analyses, spectroscopic techniques (e.g. UV/Visible, IR), solubility product and conductance measureme...
Article
The complex salt [Co(phen)3]2[Hg(SCN)4]3·3H2O was synthesized by mixing the separately dissolved tris(1,10-phenanthroline)cobalt(III) chloride, mercury(II) chloride and ammonium thiocyanate in aqueous medium in 2:3:12 molar ratio. The newly synthesized complex salt was characterized by elemental analyses, spectroscopic studies (IR, 1H, 13C and 59Co...