Jesús R Berenguer

Universidad de La Rioja (Spain) | UNIRIOJA · Chemistry

By using N,N-dibutyl-2,2'-bipyridine-4,4'-dicarboxamide as a diimine (dbbpy) and distinctive cyclometalated groups, this work reports a new family of cationic phosphorescent Ir(III) cyclometalated [Ir(C^N)2(N^N)]X compounds [C^N = difluorophenylpyridine (dfppy) a, 2,6-difluoro-3-(pyridin-2-yl)benzaldehyde (CHO-dfppy) b, and 2,6-difluoro-3-pyridin-2...

Stable and efficient high-power biohybrid light-emitting diodes (Bio-HLEDs) using fluorescent proteins (FPs) in photon downconverting filters have not been achieved yet, reaching best efficiencies of 130 lm W−1 stable for >5 h. This is related to the rise of the device temperature (70–80 °C) caused by FP-motion and quick heat-transmission in water-...

Light‐emitting electrochemical cells (LECs) are the simplest and cheapest solid‐state lighting technology for soft and/or single‐use purposes. However, a major concern is a transition toward eco‐friendly devices (emitters/electrolytes/electrodes) to meet green optoelectronic requirements without jeopardizing device performance. In this context, thi...

The production of Mesoporous Silica Nanoparticles (MSNs) with uniform textural characteristics and imaging properties in the large scale is still a challenge. Thus, the design of simple and scalable methods...

Significant advances are realized in perovskite‐converted hybrid light‐emitting diodes (pc‐HLEDs). However, long‐living devices at high efficiencies still represent a major milestone with average stabilities of <200 h at ≈50 lm W−1 under low applied currents (<15 mA). Herein, a dual metal oxide‐coated CsPbBr3@SiO2/ZrO2 composite is prepared in a on...

Self‐stability in light‐emitting electrochemical cells (LECs) based on Ir(III) ionic transition metal complexes (Ir‐iTMC) has been long overlooked. Herein, it is demonstrated that the nature of the active layer blending an archetype Ir‐iTMC as emitter and ionic electrolytes—ionic liquid (IL) or ionic polyelectrolyte (IP)—is paramount for the storag...

A new family of low‐energy emitting organic phosphors (OPs) based on [Pt2M4(CC‐1‐Np)8] clusters, in which M is either Ag(I) (1) or Cu(I) (2) and CC‐1‐Np is the strongly delocalized 1‐naphthylacetylide ligand, are presented. The inclusion of the 1‐naphthylacetylide moiety is crucial to achieve very emissive and stable OPs that do not experience ph...

Two series of neutral luminescent pentafluorophenyl cycloplatinated(II) complexes [Pt(C^N)(C6F5)L] [C^N = C-deprotonated 2-phenylpyridine (ppy; a), 2-(2,4-difluorophenylpyridine (dfppy; b)] incorporating dimethyl sulfoxide [L = DMSO for 1 (1a reported by us in ref (14))] or biocompatible phosphine [L = PPh2C6H4COOH (dpbH; 2), PPh2C6H4CONHCH2COOMe (...

This work discloses a radically new way to prepare white-emitting hybrid nanoparticles, whose implementation in lighting devices provides encouraging proof-of-concept performances towards alternative sunlight sources. In detail, the new synthetic approach is based on the kinetic control of the formation of organometallic dots, built via the condens...

Platinum complexes bearing cyclometalating ligands possess impressive photophysical properties that make these compounds desirable for optoelectronic and photonic applications. This review is focused on the structural aspects and photoluminescence properties of cycloplatinated pentafluorophenyl (C6F5) compounds. The C6F5 group is a strong field lig...

In this work, a new strategy to design low-temperature (≤200 °C) sintered dye-sensitized solar cells (lt-DSSC) is reported to enhance charge collection efficiencies (ηcoll), photoconversion efficiencies (η), and stabilities under continuous operation conditions. Realization of lt-DSSC is enabled by the integration of hybrid nanoparticles based on T...

In this study, a series of luminescent mesoporous hybrid organometallo-silica materials were successfully prepared via sol–gel coordination chemistry. The condensation of organometallic Ir(III) and Pt(II) complexes containing a 2-(diphenylphosphino)ethyltriethoxysilane (PPETS) ligand with the silica precursor (TEOS) yielded hybrid materials with ho...

Platinum solvate complexes [Pt(C6F5)(C^N)(S)] [C^N = phenylpyridinyl (ppy), S = dimethyl sulfoxide (DMSO) (A); C^N = benzoquinolinyl (bzq), S = CH3COCH3 (B)] react with [Tl(Spy)] (Spy = 2-pyridinethiolate) to afford binuclear [{Pt(C6F5)(C^N)}Tl(Spy)] [C^N = ppy (1) and bzq (2)] species containing a Pt-Tl bonding interaction, supported by a μ-Spy-κN...

The one-pot co-condensation of tetrabutyl orthotitanate (TBOT) and the neutral Ru(II) N3 dye or the new cationic Ir(III) complex [Ir(ppy)2(3,3′-H2dcbpy)]PF6 have yielded novel hybrid in-situ titanias, which present an exceptional stability against leaching or photodegradation of the coordination dye. The main advantages of this strategy are: i) hig...

Luminescent mono(pentafluorophenyl) cycloplatinated complexes [Pt(C^N-κC,N)(HC^N-κN)(C6F5)] [HC^N = Hthpy (2-(2-thienyl)pyridine) , Hbt (2-phenylbenzothiazole) , Hpq (2-phenylquinoline) ] have been prepared by C-H activation of a HC^N ligand in the corresponding [Pt(HC^N-κN)2(C6F5)2] (, , ) complexes. Complexes evolve in DMSO solution into solvate...

The reduction of the band gap of titania is critically important to fully utilize its photocatalytic properties. Two main strategies, i.e. doping and partial reduction of Ti(IV), are the main alternatives available to date. Herein, we report a new synthesis strategy based on one-pot co-condensation of in situ prepared polymetallic titanium-alkoxide...

Two types of Pt2Pb luminescent clusters were successfully prepared by the reaction of [Pt(C6F5)(bzq)(OCMe2)] (1) and [Pt(C6F5)(ppy)(dmso)] (2) with [Pb(SpyR-5)2] (R = H, CF3). Thus, whereas 5 (ppy, Spy) is generated through coordination of the pyridine-N atoms to the Pt centers, the formation of 3, 4 (bzq), and 6 (ppy, SpyCF3) is accompanied by a f...

We report a series of luminescent sandwich-type clusters [Pt2 Pb2 (C≡CR)8 ] (R=Tol, 1; C6 H4 OMe-3, 2; C6 H4 OMe-4, 3) with a dynamic Pt2 Pb2 metallic core, which is key to their intriguing stimuli-responsive photophysical properties. The solvent-free solids 1-3 display an orange emission ascribed to charge transfer from Pt-alkynyl fragments to a d...

Oxidation of [Pt(bzq-κN,κC10)(C6F5)(η2-HC≡CFc)] (1) with PhICl2 and I2 affords the unusual halideferrocenyl(vinyl)benzoquinoline PtII derivatives [Pt{bzq-κN-η2-CH═C(X)Fc}(C6F5)X] (X = Cl (4a), I (4b)), arising from C–X and C–C coupling processes, together with small amounts of the corresponding PtIV products [{Pt(bzq-κN,κC10)(C6F5)X(μ-X)}2] (X = Cl...

We report a novel cluster, [{Pt(C6F5)(bzq)}2Pb(Spy)2] , that displays reversible vapoluminescence to specific organic vapours; this behaviour can be related to the stereochemical activity of the lone pair around the Pb(II) in the ground state and to the distinct distortion of the coordination environment ( and -solvent) upon photoexcitation.

The development of synthetic routes for the tailoring of efficient silica-based heterogeneous catalysts functionalized with coordination complexes or metallic nanoparticles has become a important goal in chemistry. Most of these techniques have been based on postsynthetic treatments of preformed silicas. Nevertheless, there is an emerging approach,...

A novel series of phosphorescent stable mixed acetylide–cyanide anionic (NBu4)2[trans-Pt(C≡CR)2(CN)2] (R = Tol (1), C6H4CF3-4 (2), C5H4N-4 (3), Np (4)) complexes were prepared by reactions of the neutral [trans-Pt(C≡CR)2(PPh3)2] precursors with excess (NBu4)CN. The formation of 1–4 takes place through monoanionic [trans-Pt(C≡CR)2(CN)(PPh3)]− interm...

Synthesis procedure for TiO2 based materials for environmental applications under visible light, such as solar cells, photocatalysis and self cleaning surfaces, among others.

A new neutral cyclometalated platinum(II) solvate complex [cis-Pt(bzq)(C 6F 5)(acetone)] (1) has been prepared by easy C-H activation of 7,8-benzo[h]quinoline on the coordination sphere of [cis-Pt(C 6F 5) 2(thf) 2] (thf = tetrahydrofuran). The study of the reaction pathway has led us to the preparation of the bis(Hbzq) product [cis-Pt(C 6F 5) 2(Hbz...

The reactivity of the Pt0 derivative [Pt2(dba)3] (dba = trans,trans-dibenzylideneacetone) towards PPh2C≡CR [R = Ph, tolyl (Tol), C5H4N-2] and PPh2C≡CPPh2 (dppa) has been explored. Treatment of [Pt2(dba)3] with PPh2C≡CR (8 equiv.) in THF gave the tetrahedral complexes [Pt(PPh2C≡CR)4] [R = Ph (1), Tol (3), C5H4N-2 (5)], whereas reactions with a molar...

Surfactant-assisted co-condensation of an emissive tetranuclear alkynyl-phosphine copper cluster with TEOS affords a hydrothermally stable blue-emitter mesoporous hybrid metal complex-silica material.

A new class of heteroleptic blue emitter anion, [trans-Pt(C[triple bond, length as m-dash]CTol)(2)(CN)(2)](2-), has been prepared and successfully used in the assembling of luminescent supramolecular heterometallic PtTl(2) and PtPb(2) species.

Cycloplatinated neutral [Pt(CN){H2B(pz)2}] (1–3) [CN = benzoquinolate (bzq), 2-phenylpyridinate (ppy), and 2-phenylquinolate (pq)] and [Pt(pq){HB(pz)3}] 10 and cationic [Pt(CN){H2C(pz)2}]+ (4–6) and [Pt(CN){HC(pz)3}]+ (7–9) complexes were synthesized by the reaction of the corresponding precursors [Pt(CN)(μ-Cl)]2 with the adequate poly(pyrazolyl)-b...

Reaction of [RuCl2(PPh3)(3)] with excess of PPh2C CFc (Fc = ferrocenyl) proceeds with formation of [trans-RuCl2(PPh2C CFc)(4)] (3), which reacts with HC CR (R = Ph, Tol) via dissociative loss of one PPh2C CFc ligand to yield vinylidene complexes [mer,cis-RuCl2(C=CHR)(PPh2C 7CFc)(3)] (R = Ph 4a, Tol 4b). Reported herein also is the preparation of a...

Partial dehalogenation reaction of [Pt(C(boolean AND)N)(mu-Cl)](2) [C(boolean AND)N = 2,6-diphenyl-pyridinate (dppyH), 7,8-benzoquinolate (bzq)] with NaC C(t)Bu (or HC C(t)Bu/NEt(3)/CuI) proceeds with formation of binuclear ([{Pt(dppyH)}(2)(mu-Cl)(mu-C C(t)Bu)], 1) or tetra-nuclear ([Pt(2)(bzq)(2)(mu-Cl)(mu-C C(t)Bu)](2), 4) complexes, depending on...

Incorporation of various Pd(II) complexes into the framework of MSU-X mesoporous silica has been achieved by co-condensation using a facile solvent-free one-pot synthesis. The use of ligands with triethoxysilyl terminal groups permitted the synthesis of three different metallosilanes precursors (metal complexes with ligands containing trialkoxysila...

Different aspects of transition metal alkynyl chemistry have been widely studied over the past decades because of their interesting structures, chemical reactivity and properties. This review describes the chemistry of homo and heteropolynuclear platinum complexes containing bridging ligands, with special emphasis in synthetic routes, structural as...

Reactions between [Pt(C≡CR)4]2- (R = Tol a, C6H4OMe-4 b, C6H4OMe-3 c) and Cd2+ depend on the media and the alkynyl substituent, leading to the formation of yellow tetranuclear solvate complexes [Pt(C≡CR) 4Cd(acetone)]2 1a,b(acetone)2 and [Pt(C≡CC6H4OMe-3)4Cd(dmso)]2 1c(dmso)2 or white polymeric solvate-free species [Pt(C≡CR)4Cd]x ′a-c. Treatment of...

Reaction of different "Cd(N-N)(2)(2+)" (N-N = bpy, dmbpy, phen) or "Cd(trpy)(2+)" fragments with cis- or trans- (5) dianionic bis(alkynyl)platinate substrates [Pt(C(6)F(5))(2)(C[triple bond]CR)(2)](2-) (R = Ph a, Tol b) leads to the generation of novel bimetallic neutral Platinum-Cadmium derivatives, which show photoluminescence (PL) strongly influ...

The behavior of the cationic alkynylphosphine complex [Rh(η 5 -Cp*)Cl(PPh 2 CtCPh) 2 ](CF 3 SO 3) (1) under thermal or basic conditions is described. Complex 1 rearranges thermally (toluene, reflux) to generate a solution from which a mixture formed by 1, the monohydroalkylated derivative [Rh{κP:η 5 -C 5 Me 4 -(CH 2 CPhdCHPPh 2)}Cl(PPh 2 CtCPh)](CF...

A comparison of the solid structures of three novel trinuclear sandwich Pt 2Pb systems (NBu 4) 2[{Pt(C identical withCTol) 4} 2Pb(OH 2) 2] 1, [{Pt(bzq)(C identical withCPh) 2} 2Pb] 2, and (NBu 4)[{Pt(bzq)(C identical withCC 6H 4-CF 3-4) 2} 2Pb(O 2ClO 2)] 4 (NBu 4[ 3.(O 2ClO 2)]) with that of the previously reported (NBu 4) 2[{Pt(C 6F 5) 4} 2Pb] 5 s...

A novel series of anionic mononuclear terdentate dicyclometalated complexes (NBu4)[Pt(CwedgeNwedgeC)X] (HCwedgeNwedgeCH=2,6-diphenylpyridine) containing acetylide (X=C[triple bond]CR, R=tBu, 1; Ph, 2; Tol, 3; (4-OMe)C6H4, 4) or another anionic ligand (X=CN, 5; S-2Py, 6; CH2COCH3, 7) have been synthesized and fully characterized. The solid-state str...

The study of the reaction between the ethylene [Pt(eta-H2C = CH2)(PPh3)2] or alkyne [Pt(eta2-HC [triple bond] CR)(PPh3)2] (R = SiMe3 1, Bu(t) 2) complexes with [cis-Pt(C6F5)2(thf)2] (thf = tetrahydrofuran) has enabled us to observe the existence of competitive processes between the activation of a P-C(Ph) bond on the PPh3 ligand, to give the binucl...

A new series of functionalized (µ-hydride)(µ-acetylide) isomeric derivatives [trans-(PPh 3)(C 6 F 5)Pt(µ-H)(µ-1κC R :η 2 -CtCR)Pt(C 6 F 5)(PPh 3)] (3) and [cis,cis-(PPh 3) 2 Pt(µ-H)(µ-1κC R :η 2 -CtCR)Pt(C 6 F 5) 2 ] (4) (R) (4-CH 3)C 6 H 4 , a; (4-CN)C 6 H 4 , b; CMedCH 2 , c; C(OH)Me 2 , d; C(OH)EtMe, e; C(OH)Ph 2 , f) have been prepared by react...

A novel series of [PtTl(2)(C[triple chemical bond]CR)(4)](n) (n = 2, R = 4-CH(3)C(6)H(4) (Tol) 1, 1-naphthyl (Np) 2; n = infinity, R = 4-CF(3)C(6)H(4) (Tol(F)) 3) complexes has been synthesized by neutralization reactions between the previously reported [Pt(C[triple chemical bond]CR)(4)](2-) (R = Tol, Tol(F)) or novel (NBu(4))(2)[Pt(C[triple chemic...

The reactions of cis-[Pt(C(6)F(5))(2)(PPh(2))(2)](2-) with [AuClPPh(3)] or [Ag(OClO(3)) PPh(3)] yield the neutral heterotrinuclear complexes [M(2)Pt(mu-PPh(2))(2)(C(6)F(5))(2)(PPh(3))(2)] (M = Au, Ag). Their structures have been established by X-ray diffraction studies and both complexes display M center dot center dot center dot M interactions but...

The coordination of phenanthrene to the d8 Pt(II) center in (SP-4-2)-[Pt(C6F5)2(CO)(eta2-C14H10)] causes a slight pyramidalization at the metal-bound C atoms (C9 and C10), but no perceptible elongation of the corresponding C-C bond [C(13)-C(14) 132.0(5) vs. 133.8(5) pm in the free ligand].

The µ-hydride µ-acetylide [cis,cis-(PPh 3) 2 Pt(µ-H)(µ-1κC R :η 2 -CtCPh)Pt(C 6 F 5) 2 ] (1b) and the µ-vinylidene [cis,cis-(CO)(C 6 F 5) 2 Pt(µ-CdCHPh)Pt(PPh 3) 2 ] (2) have been prepared by reaction of the η 2 -phenylacetylene Pt(0) complex [Pt(η 2 -HCtCPh)(PPh 3) 2 ] as the starting material with the disolvated [cis-PtR 2 S 2 ] and the monosolva...

The synthesis and characterization of a series of mononuclear d8 complexes with at least two P-coordinated alkynylphosphine ligands and their reactivity toward cis-[Pt(C6F5)2(THF) 2] are reported. The cationic [Pt(C6F5)- (PPh2C=CPh)3](CF3SO3), 1, [M(COD)(PPh2C=CPh)2](CIO4) (M = Rh, 2, and Ir, 3), and neutral [Pt(o-C6H4E2)-(PPh 2C=CPh)2] (E = O, 6,...

The neutral complexes [(η6-p-cymene)RuCl2(PPh2CCR)] (R = Ph 1, tBu 2, (4-CH3)C6H4 3, (4-CCPh)C6H4 4, (4-CN)C6H4 5) have been synthesized by reacting [(p-cymene)RuCl2]2 with the respective alkynylphosphine. Treatment of 1−5 with AgOTf or TlPF6 and the corresponding PPh2CCR allows the preparation of cationic bis(diphenylphosphino) compounds [(η6-p-cy...

A family of homoleptic tetraalkynylplatinate(II) complexes (NBu4)2[Pt(CCR)4] containing various arylsubstituted (R = C6H4X), where X is an electron-donating, -withdrawing or -delocalizing substituent, and ethynylpyridine (C5H4N-2, C5H4N-4) ligands have been prepared. The structures of complexes with R = (4-CF3)C6H4 (4·2HCCl3), (4-CN)C6H4 (6·H2O) an...

The novel hexanuclear platinum–copper complex [Pt2Cu4(C6F5)4(CCtBu)4(acetone)2] (1) and the polynuclear derivative [PtCu2(C6F5)2(CCPh)2]x (2), which crystallises in acetone as [Pt2Cu4(C6F5)4(CCPh)4(acetone)4] (2)·(acetone)4, have been prepared using [cis-Pt(C6F5)2(THF)2] and the corresponding copper–acetylide [Cu(CCR)]x (molar ratio 1:2) as sta...

The novel P-coordinated diphenyl(phenylethynyl)phosphine complexes [Cp*MCl2(PPh2CCPh)] [M = Rh 1, Ir 2] have been prepared by the bridge splitting of [Cp*MCl2]2 with PPh2CCPh. Treatment of 1 and 2 with AgTfO and PPh2CCPh affords the corresponding cationic compounds [Cp*MCl(PPh2CCPh)2](OTf) [M = Rh 3, Ir 4, OTf = triflate], respectively. The analogo...

The novel acetylide complexes [trans-Pt(CCR)2(PPh3)2] [R = (Z)-CMeCHMe 2a and C(OMe)EtMe 3] have been prepared starting from [trans-Pt{CCC(OH)EtMe}2(PPh3)2] 1 by dehydration (2a) and etherification (3) reactions, respectively. The analogous α-hydroxyacetylide, R = C(OH)Ph24, has been obtained by reaction of [cis-PtCl2(PPh3)2] with HCCC(OH)Ph2 in NE...

Hexanuclear platinum−thallium complexes [Pt2Tl4(CCR)8] (R = tBu (1), Ph (2), SiMe3 (3)) have been constructed by starting from the homoleptic species [Pt(CCR)4]2- and TlNO3. X-ray analysis of [Pt2Tl4(CCtBu)8] (1) reveals that two eclipsed [Pt(CCtBu)4]2- fragments are connected by four bridging thallium(I) ions. Each Tl(I) is positioned away from th...

The reactions between [Pt(CCR)4]2- (R = Ph, t-Bu, SiMe3) and [Ir(μ-Cl)(COD)]2 have been studied, but the formation of an unsymmetrical heterobinuclear complex (NBu4)[(COD)Ir(μ-1κCα:η2-CCSiMe3)(μ-2κCα:η2-CCSiMe3)Pt(C≡CSiMe3)2], (NBu4)[{Ir−Pt}(CCSiMe3)2], 1 was only observed with the homoleptic species [Pt(CCSiMe3)4]2-. Complex 1 exhibits in the soli...

The novel acetylide complexes [trans-Pt(C≡CR)2(PPh3)2] [R=(Z)-CMe=CHMe 2a and C(OMe)EtMe 3] have been prepared starting from [trans-Pt{C≡CC(OH)EtMe}2(PPh3)2] 1 by dehydration (2a) and etherification (3) reactions, respectively. The analogous α-hydroxyacetylide, R=C(OH)Ph2 4, has been obtained by reaction of [cis-PtCl2(PPh3)2] with HC≡CC(OH)Ph2 in N...

A series of mononuclear, [trans-PtH(CCR)(PPh3)2] (R = C5H4N-2 (1), (6-CCH)C5H3N-2 (2), C6H4NH2-4 (3), (4-CCH)C6H4 (4), (CH2)5CCH (5)), and binuclear, [trans,trans-(PPh3)2HPt{μ-σ:σ-(CC)2R}PtH(PPh3)2] (R = C5H3N-2 (7), C6H4-1,4 (8)), hydride−alkynyl platinum complexes has been prepared in good to moderate yields from the reactions of [trans-PtHCl(PPh...

Treatment of (NBu4)2[Pt(CCR)4]·2H2O (R = t-Bu, 1a; SiMe3, 1b; Ph, 1c) with 1 equiv of the dicationic solvento species [Cp*M(PEt3)(acetone)2](ClO4)2 (M = Rh, Ir) results in double alkynyl transfer to give the binuclear compounds [(PEt3)Cp*M(μ-1κCα:η2-CCR)2Pt(CCR)2] (M = Rh, 2; Ir, 3), in which the organometallic unit “cis-Pt(CCR)2” is unusually stab...

The course of the reactions of Q2[cis-Pt(C6F5)2(CCR)2] (Q = PPh3Me, R = Ph 1a; Q = NBu4, R = tBu 1b, SiMe3 1c) with [M(μ-Cl)(COD)]2 (M = Rh, Ir) is strongly influenced by the metal and the substituents, as well as the stoichiometry. Thus, whereas treatment of 1a with either 0.5 or 1 equiv of [Rh(μ-Cl)(COD)]2 gives the chelating-type binuclear highl...

The complex [trans-PtH(C≡CR)PPh3)2] (1) (R = 2-pyridyl) reacts with [cis-Pt(C6F5)2(thf)2] under mild conditions to afford initially the 1:1 adduct (trans,cis-(PPh3)2(H)Pt(μ-1κC α:η2αβ: 2κN-C≡CC5H4N-2)Pt(C6F 5)2] (2), which finally rearranges to form a mixture of [cis,trans-(PPh3)(C6F5)2Pt -(μ-1κCα:2κN-C≡CC 5H4N-2)Pt+(H)(PPh3)2] (5) (X-ray) and a te...

The complex [trans-PtH(CCR)(PPh3)2] (1) (R = 2-pyridyl) reacts with [cis-Pt(C6F5)2(thf)2] under mild conditions to afford initially the 1:1 adduct [trans,cis-(PPh3)2(H)Pt(μ-1κCα:η2α,β:2κN-CCC5H4N-2)Pt(C6F5)2] (2), which finally rearranges to form a mixture of [cis,trans-(PPh3)(C6F5)2Pt-(μ-1κCα:2κN-CCC5H4N-2)Pt+(H)(PPh3)2] (5) (X-ray) and a tetranuc...

The alkynylation of [Cp*MX2(PEt3)] (Cp* = η5-C5Me5; X = Cl, M = Rh; X = I, M = Ir) with an excess of LiCCR (R = Ph (a), tBu (b), SiMe3 (c)) in thf leads to novel bis(alkynyl) [Cp*M(CCR)2(PEt3)] (M = Rh, 3a−c; M = Ir, 4a,c) or mono(alkynyl) [Cp*M(CCR)X(PEt3)] (M = Rh, X = Cl, 1a−c; M = Ir, X = I, 2c‘) complexes depending on the reaction time. Comple...

Treatment of the dinuclear doubly alkynyl bridged diplatinum complex [trans-Pt(mu-eta(1):eta(2)-C=CR)(C6F5)(PPh3)](2) (2; R = CEtMeOH) with HSPh leads to the formation of the novel thiolate cyclobutene-diylidene heterobridged diplatinum complex {cis-(PPh3)(C6F5)Pt[mu-chemical anion C chemical anion(CEtMeOH)chemical anion C(C=CEtMe)](mu-SPh)Pt(C6F5)...

The anionic mixed species [trans-Pt(C6F5)2(C???CtBu)2]2- reacts with TlNO3 to yield the heteropolymetallic compound [PtTl2(C6F5)2(C???CtBu)2] (2). The X-ray crystal structure of its adduct {2(acetone)2}n shows its polymeric nature, giving the first example of a polymeric Pt(II)???Tl(I) complex stabilized by alkynyl???thallium and platinum???thalliu...

The reactions of [NBu4]2[cis-Pt(C6F5)2(CCR2] (R=1Bu or SiMe3) wiht CoCl2·6H2O in a ]: 1 molar ratio yielded the paramagnetic binuclear species . SiMe1 (1b)) in which the cobalt(II) chloride is coordinated η2-side on to both alkynyl ligands of the platinum fragment. Similar treatment of [NBu4]2[Pt(CCR)2]·2H2O (R = 1Bu or SiMe3) with CoCl2·6H2O in...

The reaction of 2 equiv of [Rh(COD)(acetone)2]+ with the dianionic homoleptic species [Pt(C≡CR)4]2- (R = But (1a), SiMe3 (1b)) in acetone (molar ratio 2:1) gives the expected neutral trinuclear adducts {Pt(μ-C-C≡CR)4[Rh(COD)]2} (R = But (2a), SiMe3 (2b)) in moderately good yield. Further reaction of 2a with the binuclear [Rh(μ-X)(COD)]2 (X = Cl, OH...

The reaction of 2 equiv of [Rh(COD)(acetone)2]+ with the dianionic homoleptic species [Pt(CCR)4]2- (R = But (1a), SiMe3 (1b)) in acetone (molar ratio 2:1) gives the expected neutral trinuclear adducts {Pt(μ-CCR)4[Rh(COD)]2} (R = But (2a), SiMe3 (2b)) in moderately good yield. Further reaction of 2a with the binuclear [Rh(μ-X)(COD)]2 (X = Cl, OH) de...

The σ-bis and tetraalkynyl anions [cis-Pt(C6F5)2(CCR)2]2- and [Pt(CCR)4]2- (R = Ph, tBu, SiMe3) have been shown to be useful reagents for the formation of bis(μ-alkynyl) complexes via halide displacement reactions. They thus react with {[Pd(η3-C3H5)Cl]2} in a 2:1 molar ratio to form anionic heterobinuclear zwitterionic Q[cis-(C6F5)2Pt(μ-η1:η2-CCR)2...