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Publications (145)
S-4-methylbenzyl-β-N-(2-methoxybenzylmethylene)dithiocarbazate ligand, 1, prepared from S-(4-methylbenzyl)dithiocarbazate, was used to produce a novel series of transition metal complexes of the type, [M (L)2] [M = Cu(II) (2), Ni(II) (3), and Zn(II) (4), L = 1]. The ligand and its complexes were investigated by elemental analysis, FTIR, 1H and 13C-...
The title zinc bis(thiosemicarbazone) complex, [Zn(C22H17N4O2S)2], comprises two N,S-donor anions, leading to a distorted tetrahedral N2S2 donor set. The resultant five-membered chelate rings are nearly planar and form a dihedral angle of 73.28 (3)°. The configurations about the endocyclic- and exocyclic-imine bonds are Z and E, respectively, an...
The title thiourea derivative, C17H19N3OS, adopts a U-shaped conformation with the dihedral angle between the terminal aromatic rings being 73.64 (5)°. The major twist in the molecule occurs about the ethane bond with the Ci—Ce—Ce—Cb torsion angle being −78.12 (18)°; i = imine, e = ethane and b = benzene. The configuration about the imine bond is...
A novel poly(3,4-ethylenedioxythiophene)-reduced graphene oxide/copper-based metal–organic framework (PrGO/HKUST-1) has been successfully fabricated by incorporating electrochemically synthesized poly(3,4-ethylenedioxythiophene)-reduced graphene oxide (PrGO) and hydrothermally synthesized copper-based metal–organic framework (HKUST-1). The field em...
The title diorganotin Schiff base derivative, [Sn(C4H9)2(C15H13N3O2S)], features a penta-coordinated tin centre defined by the N,O,S-donor atoms of the di-anionic Schiff base ligand and two methylene-C atoms of the n-butyl substituents. The resultant C2NOS donor set defines a geometry intermediate between trigonal–bipyramidal and square-pyramidal...
The objective of this review is to summarise the achievements of tin-based compounds as potential anticancer agents in the last 10 years. Tin-based compounds attracted growing attention in many important scientific areas, especially in drug discovery. The motivation of tin-based as anticancer agents arises from the limitations of platinum-based dru...
A novel poly(3,4-ethylenedioxythiophene)-reduced graphene oxide/copper-based metal-organic framework (PrGO/HKUST-1) has been successfully fabricated by incorporating electrochemically synthesized poly(3,4-ethylenedioxythiophene)-reduced graphene oxide (PrGO) and hydrothermally synthesized copper-based metal-organic framework (HKUST-1). The field em...
The present compound, namely (Z)-4-[4-fluorophenyl]thiosemicarbazide, crystallized in a monoclinic space group, P21/c, with cell parameters a = 12.1056(8)Å, b = 5.5177(4)Å, c = 12.5617(8)Å, β = 90.063(2)°, V = 839.06(10)ų, and Z = 4. The structure was solved and the data was refined to reach R and wR indices of 0.0946 and 0.1377, respectively. In...
C 26 H 36 N 6 O 2 S 2 Zn, triclinic, P 1̄ (no. 2), a = 9.1777(5) Å, b = 12.3828(7) Å, c = 13.3137(7) Å, α = 102.157(5)°, β = 101.395(4)°, γ = 100.771(4)°, V = 1408.14(14) Å ³ , Z = 2, R gt ( F ) = 0.0489, wR ref ( F ² ) = 0.1147, T = 100(2) K.
C 12 H 17 N 3 S, monoclinic, P 2 1 / c (no. 14), a = 9.3084(19) Å, b = 7.9523(16) Å, c = 16.905(3) Å, β = 92.26(3)°, V = 1250.4(4) Å ³ , Z = 4, R gt ( F ) = 0.0330, wR ref ( F ² ) = 0.0914, T = 100(2) K.
Poly(3,4-ethylenedioxythiophene)-reduced graphene oxide/Cu-based metal-organic framework (PrGO/HKUST-1) was electrochemically synthesized via a chronoamperometry. Structural identification, functional groups characterization, morphology and charge transfer properties of the PrGO/HKUST-1 were studied using X-Ray diffraction (XRD), Fourier transform...
Twelve tin(IV) compounds (5-16) derived from four tridentate thiosemicarbazone Schiff bases of 4-methyl-3-thiosemicarbazide with 2-hydroxy-3-methoxybenzaldehyde (1, 2) and 4-phenyl-3-thiosemicarbazide with 2,3-dihydroxybenzaldehyde (3, 4) of the general formulae [R2Sn(Lⁿ)] and [Sn(Lⁿ)2] (where R = Ph or Me; Lⁿ = 1, 2, 3 and 4) were synthesized and...
A series of tridentate ONS Schiff bases were synthesised via condensation by reacting 2,3-dihydroxybenzaldehyde with S-2-methylbenzyldithiocarbazate (S2MBDTC) (1), S-4-methylbenzyldithiocarbazate (S4MBDTC) (2) and S-benzyldithiocarbazate (SBDTC) (3) in an equimolar ratio (10 mmol). The Schiff bases were then reacted with diphenyltin(IV) and dimethy...
Six new tin(IV) compounds derived from tridentate dinegatively charged ONS dithiocarbazate Schiff bases derived from 2-hydroxy-3-methoxybenzaldehyde (H2L1, H2L2 and H2L3) and 2,3-dihydroxybenzaldehyde (H2L4, H2L5 and H2L6) (where H2Ln = di-acids of Schiff base) are reported. The compounds were characterised by elemental analysis, FT-IR and multinuc...
In the title hydrazinecarbodithioate derivative, C27H26N2O2S2, the asymmetric unit is comprised of four molecules (Z = 8 and Z′ = 4). The 4-methoxyphenyl rings are slightly twisted away from their attached olefinic double bonds [torsion angles = 5.9 (4)–19.6 (4)°]. The azomethine double bond has an s-trans configuration relative to one of the...
In this article, symmetrical chalcone which is di-p-methoxybenzalacetone had been
synthesised using Aldol condensation to synthesise Schiff base from the reaction with S-benzyldithiocarbazate. Five novel metal complexes had been synthesised, fully characterised and their cytotoxicity had been tested against two types of bladder cancer cell lines th...
Four new mixed-ligand Ni(II) complexes (1–4) containing imidazole (im) or benzimidazole (bz) and tridentate Schiff bases derived from 2,4-dihydroxybenzaldehyde (24D) and 4-methyl-3-thiosemicarbazide (MT24D) or 4-phenyl-3-thiosemicarbazide (PT24D) were synthesised and characterised using elemental and spectral analysis including FTIR, UV–Vis, ¹H NMR...
The title CuII complex, [Cu(C13H11N2OS2)2], features a trans-N2S2 donor set as a result of the CuII atom being located on a crystallographic centre of inversion and being coordinated by thiolate-S and imine-N atoms derived from two dithiocarbazate anions. The resulting geometry is distorted square-planar. In the crystal, π(chelate ring)–π(furyl...
In the title bischalcone, C17H12Br2O, the olefinic double bonds are almost coplanar with their attached 4-bromophenyl rings [torsion angles = −10.2 (4) and −6.2 (4)°], while the carbonyl double bond is in an s-trans conformation with with respect to one of the C=C bonds and an s-cis conformation with respect to the other [C=C—C=O = 160.7 (3) and...
Six new organotin(IV) compounds of Schiff bases derived from S-R-dithiocarbazate
[R = benzyl (B), 2- or 4-methylbenzyl (2M and 4M, respectively)] condensed with 2-hydroxy-3-methoxybenzaldehyde (oVa) were synthesised and characterised by elemental analysis, various spectroscopic techniques including infrared, UV-vis, multinuclear (1H, 13C, 119Sn) N...
A light-yellow crystalline product (1), which was isolated after one week from the filtrate of the reaction between S-2-methylbenzyldithiocarbazate and 2,3-dihydroxybenzaldehyde, was characterised by single crystal X-ray diffraction, FTIR and NMR spectroscopic analyses. The experimental molecular structure of 1 has been established by X-ray crystal...
C18H21N3O2, triclinic, P1̅ (no. 2), a = 8.5155(4) Å, b = 10.6415(4) Å, c = 19.0732(10) Å, α = 80.918(4)°, β = 89.689(4)°, γ = 80.666(4)°, V = 1683.74(14) ų, Z = 4, Rgt(F) = 0.055, wRref(F²) = 0.133, T = 100 K.
In the title dithiocarbazate ester, C16H17N3S2 (systematic name: (Z)-{[(benzylsulfanyl)methanethioyl]amino}[1-(6-methylpyridin-2-yl)ethylidene]amine), the central methylidenehydrazinecarbodithioate (C2N2S2) core is almost planar (r.m.s. deviation = 0.0111 Å) and forms dihedral angles of 71.67 (3)° with the approximately orthogonally incl...
The title disubstituted thiourea derivative, C10H14N4S, features an almost planar imine (E configuration, C3N) core flanked by thiourea (CN2S) and methylpyridyl (C5N) residues (each plane has a r.m.s. deviation of the respective fitted atoms of 0.0066 Å). The dihedral angles between the core and the thiourea and pyridyl residues are 20.25 (8) a...
The title ZnII complex, [Zn(C19H20N3OS)2] {systematic name: bis[(N-ethyl-N′-{(Z)-[(2E)-3-(4-methoxyphenyl)-1-phenylprop-2-en-1-ylidene]amino}carbamimidoyl)sulfanido]zinc(II)}, features a tetrahedrally coordinated ZnII ion within an N2S2 donor set provided by two N,S-chelating thiosemicarbazone anions. The resulting five-membered Zn,C,...
Two independent molecules (A and B) comprise the asymmetric unit of the title compound, C18H21N3O3. The urea moiety is disubstituted with one amine being linked to a phenyl ring, which is twisted out of the plane of the CN2O urea core [dihedral angles = 25.57 (11) (A) and 29.13 (10)° (B)]. The second amine is connected to an imine (E conformation)...
The title compound, C23H21N3O2, is constructed about an almost planar disubstituted aminourea residue (r.m.s. deviation = 0.0201 Å), which features an intramolecular amine-N—H⋯N(imine) hydrogen bond. In the ‘all-trans’ chain connecting this to the terminal methoxybenzene residue, the conformation about each of the imine and ethylene double bon...
The title compound, C9H12N2S3, was obtained from a condensation reaction between S-methyldithiocarbazate and 1-(2-thienyl)-1-propane. The compound crystallized in the monoclinic space group P21/n with cell parameters a = 10.178(3), b = 13.357(4), c = 8.845(3)Å, β =98.613(5)°, Z = 4 and V = 1188.9(6)ų. The compound was nearly planar with intermolec...
Three tridentate Schiff bases containing N and S donor atoms were synthesized via the condensation reaction between S-2-methylbenzyldithiocarbazate with 2-acetyl-4-methylpyridine (S2APH); 4-methyl-3-thiosemicarbazide with 2-acetylpyridine (MT2APH) and 4-ethyl-3-thiosemicarbazide with 2-acetylpyridine (ET2APH). Three new, binuclear and mixed-ligand...
The title Zn II complex, [Zn(C 18 H 18 N 3 S) 2 ], (I), features two independent but chemically equivalent molecules in the asymmetric unit. In each, the thiosemicarbazonate monoanion coordinates the Zn II atom via the thiolate-S and imine-N atoms, with the resulting N 2 S 2 donor set defining a distorted tetrahedral geometry. The five-membered ZnS...
The title ZnII complex, [Zn(C18H18N3S)2], (I), features two independent but chemically equivalent molecules in the asymmetric unit. In each, the thiosemicarbazonate monoanion coordinates the ZnII atom via the thiolate-S and imine-N atoms, with the resulting N2S2 donor set defining a distorted tetrahedral geometry. The five-membered ZnSCN2 chela...
Metal complexes of general formula, [M(NNS)2] (M = Cu(II), Ni(II), Zn(II) and Cd(II); NNS’ = S-2-methylbenzyl-β-N-(di-2-pyridyl)methylenedithiocarbazate (1), NNS’’= S-3-methylbenzyl-β-N-(di-2-pyridyl)methylenedithiocarbazate (2) and NNS’’’= S-4-methylbenzyl-β-N-(di-2-pyridyl)methylenedithiocarbazate (3) have been synthesized by reacting the respect...
The title dithiocarbazate ester (I), C18H18N2S2 [systematic name: (E)-4-methylbenzyl 2-[(E)-3-phenylallylidene]hydrazinecarbodithioate, comprises an almost planar central CN2S2 residue [r.m.s. deviation = 0.0131 Å]. The methylene(tolyl-4) group forms a dihedral angle of 72.25 (4)° with the best plane through the remaining non-hydrogen atoms...
The complete molecule of the title hydrazine carbodithioate complex, [Ni(C19H21N2S2)2], is generated by the application of a centre of inversion. The NiII atom is N,S-chelated by two hydrazinecarbodithioate ligands, which provide a trans-N2S2 donor set that defines a distorted square-planar geometry. The conformation of the five-membered chela...
In the paper by Tayamon et al. [Acta Cryst. (2012), E68, o1640–o1641], the chemical name in the title is incorrect.
Copper (II) complexes synthesized from the products of condensation of S-methyl- and S-benzyldithiocarbazate with 2,5-hexanedione (SMHDH2 and SBHDH2 respectively) have been characterized using various physicochemical (elemental analysis, molar conductivity, magnetic susceptibility) and spectroscopic (infrared, electronic) methods. The structures of...
The title dithiocarbazate ester, C16H16N2O2S2, comprises two almost planar residues, i.e. the phenyl ring and the remaining 14 non-H atoms (r.m.s. deviation = 0.0410 Å). These are orientated perpendicularly, forming a dihedral angle of 82.72 (5)°. An intramolecular hydroxy-O—H⋯N(imine) hydrogen bond, leading to an S(6) loop, is noted. An analys...
In the title dithiocarbazate compound, C17H19N3S2, the central CN2S2 residue is essentially planar (r.m.s. deviation = 0.0288 Å) and forms dihedral angles of 9.77 (8) and 77.47 (7)° with the substituted-pyridyl and p-tolyl rings, respectively, indicating a highly twisted molecule; the dihedral angle between the rings is 85.56 (8)°. The configura...
In the title thiosemicarbazone compound, C18H18ClN3S, the CN3S residue is almost planar (r.m.s. deviation = 0.0031 Å) and forms dihedral angles of 65.99 (7) and 34.60 (10)° with the phenyl and chlorobenzene rings, respectively; the dihedral angle between the aromatic rings is 85.13 (8)°. The conformation about the C=N bond is Z, and that about th...
S-4-methylbenzyl-β-N-(2-furylmethylene)dithiocarbazate (S4MFuH, 1) derived from the condensation reaction of furaldehyde (Fu) with S-4-methylbenzyldithiocarbazate (S4MBDTC) has been complexed with transition metal acetates to give Zn(S4MFu)2 (2), Cd(S4MFu)2 (3), Cu(S4MFu)2 (4) and Ni(S4MFu)2 (5). It is evident from the shift in ν(C=N) and ν(N-N) in...
In the title compound, C15H16N2S3 {systematic name: [({[(4-methylphenyl)methyl]sulfanyl}methanethioyl)amino][1-(thiophen-2-yl)ethylidene]amine}, the central CN2S2 residue is almost planar (r.m.s. deviation = 0.0061 Å) and forms dihedral angles of 7.39 (10) and 64.91 (5)° with the thienyl and p-tolyl rings, respectively; the dihedral angle b...
Two bidentate NS ligands were synthesized by the condensation reaction of S-2-methylbenzyldithiocarbazate (S2MBDTC) with 2-methoxybenzaldehyde (2MB) and 3-methoxybenzaldehyde (3MB). The ligands were reacted separately with acetates of Cu(II), Ni(II) and Zn(II) yielding 1:2 (metal:ligand) complexes. The metal complexes formed were expected to have a...