共查询到20条相似文献,搜索用时 640 毫秒
1.
《Journal of organometallic chemistry》2007,692(1-3):257-262
The redox reaction of bis(2-benzamidophenyl) disulfide (H2L-LH2) with [Pd(PPh3)4] in a 1:1 ratio gave mononuclear and dinuclear palladium(II) complexes with 2-benzamidobenzenethiolate (H2L−), [Pd(H2L-S)2(PPh3)2] (1) and [Pd2(H2L-S)2 (μ-H2L-S)2(PPh3)2] (2). A similar reaction with [Pt(PPh3)4] produced only the corresponding mononuclear platinum(II) complex, [Pt(H2L-S)2(PPh3)2] (3). Treatment of these complexes with KOH led to the formation of cyclometallated palladium(II) and platinum(II) complexes, [Pd(L-C,N,S)(PPh3)]− ([4]−) and [Pt(L-C,N,S) (PPh3)]− ([5]−). The molecular structures of 2, 3 and [4]− were determined by X-ray crystallography. 相似文献
2.
Reactions of aquapentachloroplatinic acid, (H3O)[PtCl5(H2O)]·2(18C6)·6H2O ( 1 ) (18C6 = 18‐crown‐6), and H2[PtCl6]·6H2O ( 2 ) with heterocyclic N, N donors (2, 2′‐bipyridine, bpy; 4, 4′‐di‐tert‐butyl‐2, 2′‐bipyridine, tBu2bpy; 1, 10‐phenanthroline, phen; 4, 7‐diphenyl‐1, 10‐phenanthroline, Ph2phen; 2, 2′‐bipyrimidine, bpym) afforded with ligand substitution platinum(IV) complexes [PtCl4(N∩N)] (N∩N = bpy, 3a ; tBu2bpy, 3b ; Ph2phen, 5 ; bpym, 7 ) and/or with protonation of N, N donor yielding (R2phenH)2[PtCl6] (R = H, 4a ; Ph, 4b ) and (bpymH)+ ( 8 ). With UV irradiation Ph2phen and bpym reacted with reduction yielding platinum(II) complexes [PtCl2(N∩N)] (N∩N = Ph2phen, 6 ; bpym, 9 ). Identities of all complexes were established by microanalysis as well as by NMR (1H, 13C, 195Pt) and IR spectroscopic investigations. Molecular structures of [PtCl4(bpym)]·MeOH ( 7 ) and [PtCl2(Ph2phen)] ( 6 ) were determined by X‐ray diffraction analyses. Differences in reactivity of bpy/bpym and phen ligands are discussed in terms of calculated structures of complexes [PtCl5(N∩N)]— with monodentately bound N, N ligands (N∩N = bpy, 10a ; phen, 10b ; bpym, 10c ). 相似文献
3.
Preparation and Reactivity of Platinumcyclobutadiene Complexes [PtCl2(C4R4)L] H[PtCl3(C4H8)], prepared by reduction of H2[PtCl6] with n-butanol reacts with 2-pentyne to give equal amounts of the regioisomers [PtCl2(C4Et2Me2)] ( 3 a, 3 b ). An equimolar mixture of 2-butyne/3-hexyne reacts under the same conditions to give [PtCl2(C4Me4)] ( 1 ), [PtCl2(C4Et4)] ( 2 ) and [PtCl2(C4Et2Me2)] ( 3 a ) in a molar ratio 1:1.3:6.6. 1 and 2 react with ligands L (L = py a , p-tol b , PPh3 c , AsPh3 d , SbPh3 e ) to give complexes of the type [PtCl2(C4R4)L]. The complexes were characterized by microanalysis as well as by i.r., 1H- and 13C-n.m.r. spectroscopy. 相似文献
4.
The oxidation of [PtCl3(C2H4)]- by Cl2 in aqueous solution, to yield CH2ClCH2OH and [PtCl4]2-, has been shown to proceed through the following sequence of steps: [PtCl3(C2H4)] Cl2Cl [PtCl5(CH2CH2Cl)]2- [PtCl5(CH2CH2OH)]2- → [PtCl42- + CH2ClCH2OHEach of the steps and intermediates in this mechanistic sequence has been identified and characterized. 相似文献
5.
The coordination chemistry of platinum(II) with a series of thiosemicarbazones {R(H)C2=N3‐N2(H)‐C1(=S)‐N1H2, R = 2‐hydroxyphenyl, H2stsc; pyrrole, H2ptsc; phenyl, Hbtsc} is described. Reactions of trans‐PtCl2(PPh3)2 precursor with H2stsc (or H2ptsc) in 1 : 1 molar ratio in the presence of Et3N base yielded complexes, [Pt(η3‐ O, N3, S‐stsc)(PPh3)] ( 1 ) and [Pt(η3‐ N4, N3, S‐ptsc)(PPh3)] ( 2 ), respectively. Further, trans‐PtCl2(PPh3)2 and Hbtsc in 1 : 2 (M : L) molar ratio yielded a different compound, [Pt(η2‐ N3, S‐btsc)(η1‐S‐btsc)(PPh3)] ( 3 ). Complex 1 involved deprotonation of hydrazinic (‐N2H‐) and hydroxyl (‐OH) groups, and stsc2? is coordinating via O, N3, S donor atoms, while complex 2 involved deprotonation of hydrazinic (‐N2H‐) and ‐N4H groups and ptsc2? is probably coordinating via N4, N3, S donor atoms. Reaction of PdCl2(PPh3)2 with Hbtsc‐Me {C6H5(CH3)C2=N3‐N2(H)‐C1(=S)‐N1H2} yielded a cyclometallated complex [Pd(η3‐C, N3, S‐btsc‐Me)(PPh3)] ( 4 ). These complexes have been characterized with the help of analytical data, spectroscopic techniques {IR, NMR (1H, 31P), U.V} and single crystal X‐ray crystallography ( 1 , 3 and 4 ). The effects of substituents at C2 carbon of thiosemicarbazones on their dentacy and cyclometallation are emphasized. 相似文献
6.
《Acta Crystallographica. Section C, Structural Chemistry》2017,73(9):697-702
The photophysical properties of transition metal complexes of the 5,6‐dimethyl‐2‐(pyridin‐2‐yl)‐1‐(pyridin‐2‐ylmethyl)‐1H‐benzimidazole ligand are of interest. Dichlorido[5,6‐dimethyl‐2‐(pyridin‐2‐yl)‐1‐(pyridin‐2‐ylmethyl)‐1H‐benzimidazole‐κ2N 2,N 3]platinum(II), [PtCl2(C20H18N4)], is luminescent in the solid state at room temperature. The compound displays a distorted square‐planar coordination geometry. The Pt—N(imidazole) bond length is shorter than the Pt—N(pyridine) bond length. The extended structure reveals that symmetry‐related molecules display weak C—H…N, C—H…Cl, and C—H…Pt hydrogen‐bonding interactions that are clearly discernable in the Hirshfeld surface and fingerprint plots. The intermolecular C—H…Pt and C—H…N interactions have been explored using density functional theory. The result of an analysis of the distance dependence of C—H…Pt yields a value consistent with that observed in the solid‐state structure. The energy of interaction for the C—H…Pt interaction is found to be about −11 kJ mol−1. 相似文献
7.
《Journal of Coordination Chemistry》2012,65(4):225-230
Abstract The 1H nmr spectra of freshly prepared CDCl3 solutions of the complexes trans-[PtCl2(olefin)(L)], where L is pyridine or a substituted pyridine, show no coupling between 1 9 5Pt and the α protons of pyridine (3Jpt–NCH) owing to rapid exchange of complexed L with free L. On standing, the adventitious free L is gradually consumed by formation of trans-[PtCl2(L)2] and the spectra of the aged solutions show the coupling. When CDCl, solutions of [PtBr2(Olb)(Lb)] and [PtCl2(Ola)(La)], where Ola =C2H4, are mixed, a total of 6 ethylene complexes can be identified in solution. Accordingly halogen trading, Ol trading or/and L trading occurs and the solution probably contains a total of 12 complexes. 相似文献
8.
Reactions of SnCl2 with the complexes cis‐[PtCl2(P2)] (P2=dppf (1,1′‐bis(diphenylphosphino)ferrocene), dppp (1,3‐bis(diphenylphosphino)propane=1,1′‐(propane‐1,3‐diyl)bis[1,1‐diphenylphosphine]), dppb (1,4‐bis(diphenylphosphino)butane=1,1′‐(butane‐1,4‐diyl)bis[1,1‐diphenylphosphine]), and dpppe (1,5‐bis(diphenylphosphino)pentane=1,1′‐(pentane‐1,5‐diyl)bis[1,1‐diphenylphosphine])) resulted in the insertion of SnCl2 into the Pt? Cl bond to afford the cis‐[PtCl(SnCl3)(P2)] complexes. However, the reaction of the complexes cis‐[PtCl2(P2)] (P2=dppf, dppm (bis(diphenylphosphino)methane=1,1′‐methylenebis[1,1‐diphenylphosphine]), dppe (1,2‐bis(diphenylphosphino)ethane=1,1′‐(ethane‐1,2‐diyl)bis[1,1‐diphenylphosphine]), dppp, dppb, and dpppe; P=Ph3P and (MeO)3P) with SnX2 (X=Br or I) resulted in the halogen exchange to yield the complexes [PtX2(P2)]. In contrast, treatment of cis‐[PtBr2(dppm)] with SnBr2 resulted in the insertion of SnBr2 into the Pt? Br bond to form cis‐[Pt(SnBr3)2(dppm)], and this product was in equilibrium with the starting complex cis‐[PtBr2(dppm)]. Moreover, the reaction of cis‐[PtCl2(dppb)] with a mixture SnCl2/SnI2 in a 2 : 1 mol ratio resulted in the formation of cis‐[PtI2(dppb)] as a consequence of the selective halogen‐exchange reaction. 31P‐NMR Data for all complexes are reported, and a correlation between the chemical shifts and the coupling constants was established for mono‐ and bis(trichlorostannyl)platinum complexes. The effect of the alkane chain length of the ligand and SnII halide is described. 相似文献
9.
Goran N. Kaluđerović Tanja M. Vasiljević Mila D. Laušević Akmal S. Gaballa Tibor J. Sabo 《Monatshefte für Chemie / Chemical Monthly》2009,140(5):553-557
Abstract The electrospray mass spectrometric (ESI–MS) behavior of the complexes trans-dichloro(ethylenediamine-N,N′-di-3-propionato)platinum(IV), trans-dibromo(ethylenediamine-N,N′-di-3-propionato)platinum(IV), dichloro(ethylenediamine-N,N′-di-3-propionic acid)platinum(II), tetrachloro(O,O′-di-n-butyl-ethylenediamine-N,N′-di-3-propanoate)platinum(IV), chlorotribromo(O,O′-di-n-butyl-ethylenediamine-N,N′-di-3-propanoate)platinum(IV), and dichloro(O,O′-di-n-butyl-ethylenediamine-N,N′-di-3-propanoate)platinum(II), with the formulae trans-[PtCl2(eddp)] (1), trans-[PtBr2(eddp)] (2), [PtCl2(H2eddp)] (3), [PtCl4(Bu2eddp)] (4), [PtBr3Cl(Bu2eddp)] (5), and [PtCl2(Bu2eddp)]·H2O (6), is reported. The deprotonated molecular ions or halide adducts are usually observed. ESI–MS data demonstrate the usefulness
of the method for efficient characterization of metal complexes in solution.
Graphical Abstract
相似文献
10.
F.R. Hartley 《Journal of organometallic chemistry》1981,216(2):277-279
It is shown that trigonal bipyramidal platinum(II), rhodium(I) and iridium(I) olefin complexes are better classified with the platinum(O) complex [Pt(PPh3)2(C2H4)] as class T olefin complexes than with the square-planar platinum(II) complexes such as [Pt(C2H4)Cl3]- which fall in class S. The underlying reasons for this are considered to be electronic rather than steric as was previously suggested. 相似文献
11.
《Journal of organometallic chemistry》1986,307(1):39-47
The preparations and properties are described of novel anionic and neutral mononuclear biimidazolate (biim), bibenzimidazolate (bibzim), or tetramethylbiimidazolate (tmbiim) manganese(I) and molybdenum(II) complexes of the type [Et4N][Mn(CO)2L2(bibzim)] (L = P(OEt)3); [Et4N][Mo(η5-C5H5)(CO)2-(N)2] ((N)22− = biim2−, bibzim2− tmbiim2−); [Mn(CO)4−nLn{H(N)2}] (n = 1; H(N)2− Hbibzim−; L = P(OMe)3, PEt3), (n = 2; H(N)2− = Hbiim−, Hbibzim−; L = P(OPh)3, P(OMe)3, P(OEt)3, P(OiPr)3; [Mo(η5-C5H5)(CO)2{H(N)2}] (H(NN)2− = Hbiim−, Hbibzim−, Htmbiim−, in which the heterocyclic anions act as bidentate chelate groups. Treatment of the anionic complexes with MeI gives neutral derivatives of general formula [Mn(CO)2L2(Mebibzim)] (L = P(OMe)3, P(OEt)3) and [Mo(η5-C5H5)(CO)2{Me(N)2}] (Me(N)2− = Me-biim−, Mebibzim−, Metmbiim−. Cationic manganese(I) complexes of the type [Mn(CO)4−nLn{H2(N)2}][ClO4 (n = 1; H2 (N)2 = H2bibzim; L = P(Ome)3, PEt3), (n = 2; H2(N)2 = H2biim, H2bibzim; L = P(OPh)3, P(OMe)3, P(OEt)3, P(OiPr)3) have also been obtained by treating the corresponding neutral complexes with HClO4. The structures of the complexes have been elucidated by molecular weight determinations, conductance data, and IR spectroscopy. 相似文献
12.
Yoshiko Okada Shinobu Kishi Yasuko Shishido Masako Kato 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(5):m171-m173
Dichloro(4,4′‐dipentyl‐2,2′‐bipyridine‐κ2N,N′)platinum(II), [PtCl2(C20H28N2)], adopts a discrete π–π stacking structure, where the alkyl chains are located in a random manner. In contrast, dichloro(4,4′‐diheptyl‐2,2′‐bipyridine‐κ2N,N′)platinum(II), [PtCl2(C24H36N2)], forms a layer structure comprised of alkyl chain layers and paired coordination sites, as observed for analogous complexes with longer alkyl chains. 相似文献
13.
Nguyen Thi Thanh Chi Tran Thi Da Nguyen Van Ha 《Journal of Coordination Chemistry》2017,70(6):1008-1019
For the first time, eugenol, a natural bioactive allylphenol, was introduced into coordination with platinum(II) by replacement of ethylene from Zeise’s salt with eugenol (Eug). The obtained complex, K[PtCl3(Eug)] (1), was used as the key compound for preparation of the series of trans-[PtCl2(Eug)(Amine)] (2–11), [PtCl(Eug)(8-O-quinoline)] (12) and [PtCl(Eug)(2-O2C-quinoline)] (13). The synthesized complexes were characterized by elemental analyses, IR, 1H NMR, 13C NMR, HSQS, HMBC, NOESY, and MS spectra. In 1–13 eugenol coordinates with Pt(II) at ethylenic double bond of the allyl group, the donor N of the amines is in trans-position in comparison with the double bond. A display of the trans-effect on the chemical shift of 1H and 13C was remarked. Seven complexes were tested for cell in vitro cytotoxicity on human cancer cells. Complexes 3 and 12 exhibit high activities on Hep-G2 with IC50 = 3.12 and 5.29 μM; 12 gives high activity against KB, Lu and MCF-7 with IC50 = 0.43, 2.95 and 1.84 μM, respectively. Most of these IC50 are lower than those of cisplatin. 相似文献
14.
《Polyhedron》1987,6(9):1797-1802
Reaction of diphenyl(cyclopentadienyl)phosphine, 1, with [PdCl2(PhCN)2], [PtCl2(SMe2)2] or [M(CO)4(norbornadiene)], where M = Mo or W, gave the complexes [PdCl2{(Ph2P)2C10H10}], [PtCl2{(Ph2P)2C10H10}] or [M(CO)4{(Ph2P)2C10H10}] respectively, in which the ligand underwent dimerization by Diels-Alder addition. The reaction occurs in a very selective way and this is rationalized in terms of a template effect, in which two ligands 1 in mutually cis positions undergo the Diels-Alder reaction. In contrast, the complex [Fe(CO)4(Ph2PC5H5)] is stable to Diels-Alder addition. The structures of the complexes were deduced by 1H, 13C and 31P NMR spectroscopy. The major product contains a six-membered chelate ring while a minor product, formed in the palladium and platinum systems only, contains a five-membered chelate ring. 相似文献
15.
Nature of the solvent plays a major role in the photochemical behaviour of cis- and trans-[PtCl2(ethylene)(amine)] complexes. Dimeric compounds [Pt2Cl4-(amine)2] are obtained on irradiation of these complexes in chloroform or diethyl ether. A non-stereospecific reaction of photosubstitution is observed in nitrile solvents. When methanol, dimethoxyethane or dimethylformamide are used as solvents, cis and trans complexes have a quite different photochemical behaviour, but in all of the cases, a photodegradation leading to ionic species [PtCl3(ethylene)]? H+ amine and [PtCl3(amine)]? H+ amine is the main reaction. 相似文献
16.
Summary Rate constants are reported for the reaction of [PtCl4]2– with hydrochloric-perchloric acid mixtures, in aqueous methanol and aqueous t-butanol at 308.2 K. The observed first-order rate constants are, from their dependence on chloride concentration, divisible into forward and reverse rate constants for the equilibrium: [PtCl14]2–+H2O[PtCl3(OH2)]–+Cl–. The solvent dependence of aquation rates for [PtCl4]2– is compared with those for other chlorotransition metal complexes, and discussed in terms of the Grunwald-Winstein method of mechanism diagnosis in organic systems. The solvent dependence of rates of [PtCl4]2– formation is compared with the rates of formation of other metal complexes; differences between this platinum reaction and, for example, nickel(II) formation, are rationalised in terms of the reactant charge product difference and consequent solvent permittivity effects on rate trends. 相似文献
17.
John R. Briggs Christopher Crocker Walter S. McDonald Bernard L. Shaw 《Journal of organometallic chemistry》1979,181(1):213-221
Five complexes of type cis-[PtCl2(PR3)Q] (PR3 =PMe3, PMe2Ph, PEt3; Q = CH2 CHOCOCH3 or CH2=CHCH2OCOCH3) have been prepared. The crystal structure of cis-[PtCl2[PME2Ph)(CH2=CHOCOCH3)] is described. Crystals of cis-[PtCl2(PME2Ph)(CH2-CHOCOCH3)] are triclinic, with a 8.441(4), b 13.660(5), c 7.697(3) Å, a 101.61(3)°, β 111.85(3)° γ 95.22(3)°, pP1, Z = 2. The structure was determined from 2011 reflections I σ 3σ (I) and refined to R = 0.037. The CH3COO grouping is syn to the cis-PMe2Ph ligand, with bond lengths of PtCl (trans to P) 2.367(3), PtCl (trans to olefin) 2.314(3), PtP 2.264(2), and PtC of 2.147(12) and 2.168(11) Å. The complexes cis-[PtCl2- (PR3)Q] were studied by variable temperature 1H and 31P NMR spectroscopy. Spectra of the vinyl acetate complexes were temperature dependent as a result of rotation about the platinum—olefin bond. The rotation was “frozen out” at ca. 240 K; for cis-[PtCl2(PME2Ph)(CH2=CHOCOCH3] ΔG≠ (rotation) 15.0 ± 0.2 kcal mol-1. NMR parameters for the rotamers are reported. NMR studies of the interaction between chloro-bridged complexes of type [Pt2Cl2(PR3)2] (PR3 = P-N-Pr3 or PMe2Ph) and vinyl acetate shows that even at low temperatures (213 K) equilibrium favours the bridged complex and the proportion of trans-[PtCl2(PR3)CH2=CHOCOCH3)] is very small e.g. 2%. The allyl acetate complexes cis-[PtCl2(PR3)(CH2=CHCH2OCOCH3)] showed only one rotamer over the range 333–213 K. Reversible dissociation of cis-[PtCl2(PMe2Ph)- (CH2=CHCH2OCOCH3)] to [Pt2Cl4(PMe2Ph)2] + allyl acetate was studied at ambient temperature. At low temperatures e.g. 213–190 K addition of allyl acetate to a CDCl3 solution of [Pt2Cl2(P-n-Pr3)2] reversibly gave some olefin complex trans-[PtCl2(P-n-Pr3)(CH2=CHCH2OCOCH3)] and some O-bonded complex trans-[PtCl2(P-n-Pr3)(CH2=CHCH2OCOCH3)]. 相似文献
18.
Irena Tatosian Amanda Bubas Anna Iacovino Susan Kline Luke Metzler Michael Van Stipdonk 《Journal of mass spectrometry : JMS》2019,54(9):780-789
The goals of the present study were (a) to create positively charged organo‐uranyl complexes with general formula [UO2(R)]+ (eg, R═CH3 and CH2CH3) by decarboxylation of [UO2(O2C─R)]+ precursors and (b) to identify the pathways by which the complexes, if formed, dissociate by collisional activation or otherwise react when exposed to gas‐phase H2O. Collision‐induced dissociation (CID) of both [UO2(O2C─CH3)]+ and [UO2(O2C─CH2CH3)]+ causes H+ transfer and elimination of a ketene to leave [UO2(OH)]+. However, CID of the alkoxides [UO2(OCH2CH3)]+ and [UO2(OCH2CH2CH3)]+ produced [UO2(CH3)]+ and [UO2(CH2CH3)]+, respectively. Isolation of [UO2(CH3)]+ and [UO2(CH2CH3)]+ for reaction with H2O caused formation of [UO2(H2O)]+ by elimination of ·CH3 and ·CH2CH3: Hydrolysis was not observed. CID of the acrylate and benzoate versions of the complexes, [UO2(O2C─CH═CH2)]+ and [UO2(O2C─C6H5)]+, caused decarboxylation to leave [UO2(CH═CH2)]+ and [UO2(C6H5)]+, respectively. These organometallic species do react with H2O to produce [UO2(OH)]+, and loss of the respective radicals to leave [UO2(H2O)]+ was not detected. Density functional theory calculations suggest that formation of [UO2(OH)]+, rather than the hydrated UVO2+, cation is energetically favored regardless of the precursor ion. However, for the [UO2(CH3)]+ and [UO2(CH2CH3)]+ precursors, the transition state energy for proton transfer to generate [UO2(OH)]+ and the associated neutral alkanes is higher than the path involving direct elimination of the organic neutral to form [UO2(H2O)]+. The situation is reversed for the [UO2(CH═CH2)]+ and [UO2(C6H5)]+ precursors: The transition state for proton transfer is lower than the energy required for creation of [UO2(H2O)]+ by elimination of CH═CH2 or C6H5 radical. 相似文献
19.
Cyclic voltammetry has been employed to study the diffusive, irreversible platinum(II) → platinum(0) reduction of three sets of structurally related complexes: cis-[PtCl2P{p-C6H4X}3)2] (X = H, CH3, Cl, F, OCH3, N(CH3)2); cis-[PtCl2(PPh2R)2] (R = CH3, n-C3H7, n-C5H11, n-C6H13, n-C12H25) and cis-[PtCl2(PR3)2] (R = CH3, C2H5, CH2ch2CN). Relationships between the peak potentials for the Pt(II) → Pt(0) reduction and thermodynamic parameters which measure the electronic properties of the ligands are shown to exist for complexes of P{p-C6H4X}3 ligands, implying a thermodynamic origin for the sensitivity of the peak potentials to structural change. Complexes of both P{p-C6H4X}3 and PPh2R ligands show correlations between peak potentials for reduction and the 31P{1H} NMR spectroscopic parameter, 1J(195Pt, 31P). Correlations with values of δ(31P) exist in both cases, but a correlation with the coordination chemical shift, Δδ(31P), exists for complexes of PPh2R, and not for complexes of P{C6H4X}3. Complexes of PR3 ligands show no correlation between the peak potentials measured for the Pt(II) → Pt(0) reduction and electronic or spectroscopic parameters, except possibly 1J(195Pt, 31P). 相似文献
20.
《Journal of Coordination Chemistry》2012,65(3):465-474
The reaction of a dichloromethane solution of a mixture of cis,trans-[PtCl2(SMe2)2] with a tetrahydrofuran solution of SnBr2 resulted in oxidation of platinum(II) with halogen exchange producing cis,trans-[PtBr4(SMe2)2]. Reaction of a mixture of cis,trans-[PtCl2(SEt2)2], potassium tetrachloroplatinate(II) or potassium hexachloroplatinate(IV) with SnBr2 in hydrochloric acid solution resulted in formation of predominantly anionic five-coordinate trichlorostannyl platinum(II) complexes. Reaction of potassium tetrabromoplatinate(II) with SnCl2 in hydrobromic acid in the presence of tetraphenylphosphonium bromide affords cis-[PPh4]2[PtBr2(SnBr3)2]. The insertion of SnCl2 into Pt–Cl bond of platinum(II) complexes cis-[PtCl2(L2)] {L2 = (PPh3)2; (PMe3)2; {P(OMe)3}2; dppm (bis(diphenylphosphino)methane); dppa (bis(diphenylphosphino)amine); and dppe (1,2-bis(diphenylphosphino)ethane)} is described. 相似文献