共查询到20条相似文献,搜索用时 31 毫秒
1.
《Journal of organometallic chemistry》1986,315(2):255-268
The reactions of Pt(PPH3)4 and Pt(C2H4)(PPh3)2 with CH2ClI have been investigated. The product of the reaction of Pt(PPh3)4 with CH2ClI is the cationic ylide complex cis-[Pt(CH2PPh3)Cl(PPh3)2][I], whereas the reaction of Pt(C2H4)-(PPh3)2 gives the oxidative addition product Pt(CH2Cl)I(PPh3)2. Reaction of cis- or trans-Pt(CH2Cl)I(PPh3)2] with PPh3 gives the complex cis-[Pt(CH2PPh3)-Cl(PPh3)2][I]. The structures of the complexes cis-[Pt(CH2PPh3X(PPh3)2][I] (where X = Cl or I) have been determined by X-ray crystallography. Both complexes crystalize in the monoclinic space group P21/n. For X = Cl a 1388.6(7), b 2026.7(10), c 1823.9(9) pm, β 96.51(2)° and R converged to 0.075 for 3542 observed reflections; structural parameters Pt-Cl 240(1), Pt-C(3) 212(2), Pt-P(2) (trans to Cl) 235(1) and Pt-P(1) (trans to CH2PPh3) 233(1) pm; Cl-Pt-C(3) 86.9(5), C(3)-Pt-P(2) 91.8(5), P(2)-Pt-P(1) 97.0(2) and P(1)-Pt-Cl 85.1(2)°. For X = I, a 1379.4(7), b 2044.4(10), c 1840.0(9) pm, β 96.09(2)° and R converged to 0.071 for 4333 observed reflections; structural parameters Pt-I 266(1), Pt-C(3) 212(2), Pt-P(2) (trans to I) 226(1) and Pt-P(1) (trans to CH2PPh3 233(1) pm; I-Pt-C(3) 87.2(5), C(3)-Pt-P(2) 91.5(5), P(2)-Pt-P(1) 96.5(2) and P(1)-Pt-I 85.6(1)°. Some other complexes of the type cis-[Pt(CH2PPh3)X(PPh3)2]Y are also described. 相似文献
2.
《Journal of Coordination Chemistry》2012,65(3-4):261-266
Abstract The new complexes [CpRu(PPh3)2(RSSR)PF6 R=CH3, iso-Pr, CH2C6H5 and C6H5 have been prepared from the reaction of CpRu(PPh3)2Cl with RSSR in CH3OH in presence of NH4Cl. This result contrasts with the oxidative additions of RSSR to CpFe(dppe)1 dppe=PPh2 (CH2)2PPh2 to give [CpFe(dppe)SR]PF6 (C. Diaz et al., J. Organomet. Chem. 516, 59 (1996)). Huckel calculations on model fragments CpFe(PPh3)2 and CpRu(PPh3)2 suggest that the higher electron density of iron could explain the differences observed in reactivity. Possible biological implications are discussed. 相似文献
3.
Carlo Bartocci Andrea Maldotti Silvana Sostero Orazio Traverso 《Journal of organometallic chemistry》1983,253(2):253-258
The photolysis of [L2Pt(C2H4)] (L = PPh3, P(p-C6H4CH3)3 complexes in halocarbon solvents (CH2Cl2, CH2Br2) gives C2H4 and the coordinatively unsaturated species [L2Pt]. Photolysis of platinum metallacycles [L2Pt(CH2)4] (L = PPh3, P(n-Bu)3) generates alkanes, alkenes and [L2Pt]. The [L2Pt] centers are very reactive, and under prolonged photolysis undergo oxidative addition of CH2Cl2 forming the trans-[L2Pt(CH2Cl)Cl] complexes. Under appropriately controlled conditions the trans complexes isomerize to cis species before bimolecular C2H4 elimination occurs and [L2PtCl2] is formed as the final product. The oxidative addition-reductive elimination mechanism is discussed on the basis of spin-trapping experiments, quantum yield values, and the sensitivity to radical inhibitors and to solvents. 相似文献
4.
The (hydroxo) methyl complex Pt(OH)(CH3)(Diphos) [Diphos = Ph2PCH2CH2PPh2] reacts with compounds containing acidic CH bonds (HX) to give unsymmetrical cis-dialkyls of general formula Pt(CH3)X(Diphos) [X = CH2COCH3, CH(COCH3)2, CH2CN or CH2NO2]; both the methyl and the cyclohexenyl complexes Pt(OH)R(Diphos) (R = CH3 or C6H9) insert carbon monoxide to give hydroxycarbonyl complexes PtR(CO2H)(Diphos) which are remarkably stable to decomposition by β-elimination. 相似文献
5.
The reaction of Pt(PPh3)4 with CH2Cl1 in benzene yields the cationic ylide complex -[Pt(PPh3)2(CH2PPh3)Cl]I in high yield. This complex has been converted to -[(PPh3)2(CH2PPh3)X]X (X Br or I) by reaction with LiBr or NaI. Reaction of -[Pt(PPH3)I]I with iodine yields -[Pt(PPh3)2(CH2PPh3)I]I3. Nmr data are given in support of the suggested structures. 相似文献
6.
《Journal of organometallic chemistry》1987,334(3):389-397
From suitable perhalophenyl derivatives of palladium(II), viz.: Pd(C6F5)2-(SC4H8)2, [Pd(μ-X′) (C6X5)2]2(NBu4)2, [Pd(μ-Cl)(C6X5)(SC4H8)]2 (X = F, Cl, X′ = Cl, Br), new complexes of various types have been prepared, viz.: trans-Pd(C6F5)2(Y)2, Pd(C6X5)2(Y), PdCl(C6X5)(Y) (X = F, Cl). The neutral ligand Y is a keto-stabilized phosphorus ylide of the type Ph2P(CH2)nPPh2CHC(O)R (n = 1, R = CH3, C6H5; n = 2, R = C6H5) acting in a terminal monodentate P-donor or a bidentate chelate P,C-donor mode. The reaction of PdCl(C6F5)(Y) complexes with HCl leads to the corresponding PdCl2(C6F5)(YH) complexes in which the phosphonium cation [YH]+ behaves as monodentate P-donor at its phosphinic end.IR and 31P NMR spectroscopy were used to decide the coordination mode of the ligands and, in some cases, to reveal the presence of two isomers. 相似文献
7.
Johan W. Gosselink Gerard van Koten Kees Vrieze Binne Zwanenburg Ben H.M. Lammerink 《Journal of organometallic chemistry》1979,179(4):411-419
Reactions of Pt(PPh3)4 with the sulfines, XYCSO, (X, Y = aryl, S-aryl, S-alkyl, Cl) yield coordination compounds of the type Pt(PPh3)2(XYCSO). Infrared, 31P and 1H NMR spectra reveal that in all cases the sulfine ligand is coordinated side-on via the CS π-bond (Pt—η2-CS). Reactions of Pt(PPh3)4 with either the E- or Z-isomer of (p-CH3C6H4)(CH3S)CSO yields the corresponding E- or Z-coordination compound, Pt(PPh3)2[E-(p-CH3C6H4)(CH3S)CSO] or Pt(PPh3)2[Z-(p-CH3C6H4)(CH3S)CSO], indicating that the configuration of the sulfine ligand is retained upon coordination to the Pt(PPh3)2 unit. The compounds Pt(PPh3)2(XYCSO), containing reactive CX and/or CY bonds (X, Y = S-aryl, S-alkyl, Cl), undergo a rearrangement in solution to give complexes of the type PtX(PPh3)2(YCSO). 相似文献
8.
Carbamoyl and alkoxycarbonyl complexes of palladium(II) and platinum(II) of the type M(pnp)(CONHR)Cl (pnp = 2,6-bis(diphenylphosphinomethyl)pyridine; M Pd, R C6H5, p-CH3C6H4, p-CH3OC6H4, C6H11, t-Bu; M Pt, R C6H5), Pd(pnp)[CON(Pr)2]Cl (Pr = propyl), M(pnp)(COOR)Cl (M Pd, R C6H5, CH3; M Pt, R CH3), Pd(pnp)(COOCH3)2 result from reaction of M(pnp)Cl2 with carbon monoxide and amines or alkoxides at room temperature and atmospheric pressure.The carbamoyl complexes react with bases to give urethane or diphenylurea depending upon the experimental conditions. 相似文献
9.
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
10.
The effect of tin(II) chloride on the extraction of tetrachloroplatinate(II) in 1.0–1.5 M HCl into dichloromethane with triphenylphosphine (TPP) is described. Tin(II) chloride dramatically increases the rate and efficiency of platinum extraction. The percentage of platinum extracted depends in a complicated way on the time allowed for extraction, the Pt:Sn(II) ratio, the Pt:TPP ratio, and to a lesser extent to the hydrochloric acid concentration. Tin is initially extracted into the organic phase, probably as [Pt(SnCl3)Cl(PPh3)2], but is subsequently back-extracted into the aqueous phase, as a result of the relatively slow disproportionation reaction: [Pt(SnCl3)Cl(PPh3)2]org + cl? ? [Pt(PPh3)2Cl2]org + SnCl?3. 相似文献
11.
Nigel J. Kermode Michael F. Lappert Brian W. Skelton Allan H. White John Holton 《Journal of organometallic chemistry》1982,228(3):C71-C75
The reaction of [Pt(PEt3)3] with CH2I2 affords trans-[Pt(CH2PEt3)I(PEt3)2]I and is believed to proceed via the α-functionalised alkyl cis-[Pt(CH2I)I(PEt3)2], because similar ylides are obtained from cis- or trans-[PT(CH2X)(PPh3)2X] (XCl, Br, or I) with PR3 (PEt3, PBu3n, PMePh2, PEtPh2, or PPh3); cis-[Pd(CH2I)-I(PPh3)2] does not react with excess PPh3, but with PEt3 yields trans-[Pd(CH2PEt3)I(PPh3)2]I; the X-ray structure of trans-[Pt(CH2PEt3)I(PEt3)2]I (current R = 0.045) shows PtP(1) 2.332(7), PtP(2) 2.341(8), PtC 2.08(2), and PtI 2.666(2) Å, and angles (a) C(1)PtI, P(1), P(2): 176.9(8), 91.6(6), 93.4(6), (b) IPtP(1), P(2): 87.1(2), 88.5(2), and (c) P(1)P(2), 166.8(3), and (d) PtC(1)P(3), 118(1)°. 相似文献
12.
Treatment of [(1,5-C8H12)PtCl(X)] (X=Cl, CH3, CH2CMe3) with C2 chiral cyclopentane-1,2-diyl-bis(phosphanes) C5H8(PR2)2, either as racemic mixtures or as resolved enantiomers, afforded the chelate complexes [C5H8(PR2)2Pt(Cl)(X)] (X=Cl: R=Ph (1), N-pip (2), OPh (3); X=CH3: R=Ph (4), N-pip (5), OPh (6); X=CH2CMe3: R=Ph (7), N-pip (8), OPh (9); ‘N-pip’=N(CH2)5), (+)-[(1R,2R)-C5H8{P(OPh)2}2PtCl2] [(R,R)-3], (−)-[(1S,2S)-C5H8{P(OPh)2}2PtCl2] [(S,S)-3], (−)-[(1R,2R)-C5H8(PPh2)2Pt(Cl)(X)], and (+)-[(1S,2S)-C5H8(PPh2)2Pt(Cl)(X)] (X=CH3: (R,R)-4, (S,S)-4; X=CH2CMe3: (R,R)-7, (S,S)-7). Reacting 4, 6, and 7 with AgO3SCF3 led to triflate derivatives [C5H8(PR2)2Pt(X)(OSO2CF3)] [X=CH3: R=Ph (11), OPh (12); X=CH2CMe3: R=Ph (13)] with covalently bonded OSO2CF3 ligands. The unusual Pt2 complex [μ-Cl{C5H8(PPh2)2PtCH3}2]O3SCF3 (14) containing an unsupported single Pt---Cl---Pt bridge was also isolated. In the presence of SnCl2, complexes 1, 3, 4, 6, 7, and 9 are catalysts for the hydroformylation of styrene forming 2- and 3-phenylpropanal together with ethylbenzene. Except for 1, they also catalyze the consecutive hydrogenation of the primary propanals to alcohols. High regioselectivities towards 2-phenylpropanal (branched-to-normal ratios ≥91:9) were obtained in hydroformylations catalyzed by 3 and 4, for which the influence of varied CO/H2 partial pressures, catalyst-to-substrate ratios and different reaction temperatures and times on the outcome of the catalytic reaction was also studied. When tin-modified complexes (R,R)-3, (S,S)-3, and (S,S)-4 were used as optically active Pt(II) catalysts, an only low stereoselectivity for asymmetric hydroformylation (e.e.<18%) was observed. The Pt---Sn complexes [C5H8(PR2)2Pt(CH3)(SnCl3)] [R=Ph (15), OPh (17)], resulting from SnCl2 insertion into the Pt---Cl bonds of 4 or 6, undergo rapid degradation in solution, forming mixtures composed of [C5H8(PR2)2Pt(X)(Y)] with R=Ph or OPh and X/Y=Cl/SnCl3 (16, 18), Cl/Cl (1, 3), and SnCl3/SnCl3 (19, 20), respectively. In the presence of SnCl2, triflate complex 11 also becomes a catalyst for styrene hydroformylation and consecutive hydrogenation of the aldehydes to alcohols. The crystal structures of 11 complexes — 2, 5, 7, 8, 9, 10 (the previously prepared [C5H8{P(N-pip)2}2Pt(CH2CMe3)2]), 13, 14, 16, (R,R)-3, and (S,S)-3 — were determined by X-ray diffraction. 相似文献
13.
Matthias Seibert 《Journal of organometallic chemistry》2003,687(1):131-141
The P-functional organotin chloride Ph2PCH2CH2SnCl3 reacts with [(COD)MCl2] and trans-[(Et2S)2MCl2] (M=Pd, Pt) in molar ratio 1:1 to the zwitterionic complexes [(COD)M+(Cl)(PPh2CH2CH2Sn−Cl4)] (1: M=Pd; 2: M=Pt) and trans-[(Et2S)2M+(Cl)(PPh2CH2CH2Sn−Cl4)] (3: M=Pd; 4: M=Pt). The same reaction with [(COD)Pd(Cl)Me] yields under transfer of the methyl group from palladium to tin the complex [(COD)M+(Cl)(PPh2CH2CH2Sn−MeCl3)] (5) which changes in acetone into the dimeric adduct [Cl2Pd(PPh2CH2CH2SnMeCl2·2Me2CO)]2 (6). In molar ratio 2:1 Ph2PCH2CH2SnCl3 reacts with [(COD)MCl2] to the complexes [Cl2Pd(PPh2CH2CH2SnCl3)2] (7: M=Pd, mixture of cis/trans isomer; 8: M=Pt, cis isomer). In a subsequent reaction 8 is transformed in acetone into the 16-membered heterocyclic complex cis-[Cl2Pt(PPh2CH2CH2)2SnCl2]2 (9). trans-[(Et2S)2PtCl2] and Ph2PCH2CH2SnCl3 in molar ratio 1:2 yields the zwitterionic complex [(Et2S)M+(Cl)(PPh2CH2CH2SnCl3)(PPh2CH2CH2Sn−Cl4)] (10). The results of crystal structure analyses of 1, 3, 6, 9 and of the adduct of the trans-isomer of 7 with acetone (7a) are reported. 31P- and 119Sn-NMR data of the complexes are discussed. 相似文献
14.
Jwu-Ting Chen Yu-Sung Yeh Wen-Hwa Tzeng Tsang-Miao Huang Ming-Chu Cheng Geen-Hsiang Lee Yu Wang 《中国化学会会志》1991,38(6):573-580
Treatment of trans-Pt(COCOPh)(Cl)(PPh3)2 (1a) with AgBF4in THF led to the formation of a metastatic complex trans-[Pt(COCOPh)(THF)(PPh3)2](BF4) (2) which readily underwent ligand substitution to give a cationic aqua complex trans-[Pt(COCOPh)(OH2)(PPh3)2](BF4) (5a). Complex 5a has been characterized spectroscopically and crystallographically. Analogous reaction of trans-Pt(COCOOMe)(Cl)(PPh3)2 (1b) with Ag(CF3SO3) in dried CH2C12 was found first to yield a methoxyoxalyl triflato complextrans-Pt(COCOOMe)(OTf)(PPh3)2 (6). Attempts to crystallize the triflato product in CH2-cl2hexane under ambient conditions also afforded an aqua complex of the triflate salt f/wu-[Pt(COCOOMe)(OH2)(PPhj)2](CF3SO3) (5b). Complex 5a in a noncoordinating solvent such as CH2C12 or CHCl3 suffered spontaneous decarbonylation to form first cis-[Pt(COPh)(CO)(PPh3)2l(BF4) (3a) then the thermodynamically stable isomer trans-[Pt(COPh)(CO)(PPh3)2](BF4) (3b). Crystallization of complex 3b under ambient conditions resulted in an aqua benzoyl complex trans-[Pt(COPh)(OH2)(PPh3)2](BF4) (7). The replacement of the H2O ligand in complex 7 by CO was done simply by bubbling CO into the solution of 7. The single crystal structures of 5b and 7 have been determined by X-ray diffraction. The distances of the Pt-O bonds in 5a, 5b, and 7 support that the aqua ligand is a weak donor in such cationic aquaorganoplatinum(lI) complexes, in agreement with their lability to the substitution reactions. 相似文献
15.
Diphenylphosphorylazide N3P(O)(OPh)2 reacts with Pt(PPh3)3, Pt(PPh3)2(C2H4), trans-RhCl(CO)(PPh3)2, Ru(CO)3(PPh3)2, CoCl2(PPh3)2 and CuCl(PPh3)2 to give the azido complexes Pt(PPh3)2(N3)R, Pt(PPh3)2(N3)2R2, the urylene complex RhCl(PPh3)2(RNCONR) and the phosphine imine complexes Ru(CO)3(RPPh3)2, CoCl2(RNPPh3)2, CuCl(RNPPh3)2, respectively, (RP(O)(OPh)2). The oxidative addition of n-C6F13SO2N3 to Pt(PPh3)4 and Pt(PPh3)2(C2H4) affords the complexes Pt(PPh3)2(N3)R and Pt(PPh3)2(N3)2R2, respectively, (RSO2C6F13. The compounds are characterized by elemental analysis and by their IR spectra. 相似文献
16.
Georg Reinhard Michael Knorr Pierre Braunstein Ulrich Schubert Saeed Khan Charles E. Strouse Herbert D. Kaesz Alfred Zinn 《欧洲无机化学杂志》1993,126(1):17-21
Transition Metal Silyl Complexes, 44. — Preparation of the Binuclear Silyl Complexes (CO)3(R3Si)Fe(μ-PR′R′′)Pt(PPh3)2 by Oxidative Addition of (CO)3(R′R′′HP)Fe(H)SiR3 to (C2H4)Pt(PPh3)2 The complexes (CO)3(R′R′′HP)Fe(H)SiR3 ( 1 ) [PHR′R′′ = PHPh2, PH2Ph, PH2Cy; SiR3 = SiPh3, SiPh2Me, SiPhMe2, Si(OMe)3] react with Pt(C2H4)(PPh3)2 to give the dinuclear, silyl-substituted complexes (CO)3(R3Si)Fe(μ-PR′R′′)Pt(PPh3)2 ( 2 ) in high yields. Upon reaction of 2 (R = R′ R′′ = Ph) with CO, the PPh3 ligand at Pt being trans to the PPh2 bridge is exchanged, and (CO)3(Ph3Si)Fe(μ-PPh2)Pt(PPh3)CO ( 3 ) is formed. Complex 3 is characterized by an X-ray structure analysis. The rather short Fe — Si distance [233.9(2) pm] and the infrared spectrum of 3 indicate that the Fe — Pt bond is quite polar. 相似文献
17.
T.G. Appleton M.A. Bennett A. Singh T. Yoshida 《Journal of organometallic chemistry》1978,154(3):369-385
The reactions of various alkyne-platinum(0) complexes with methyl iodide and with iodine have been studied. The 3-hexyne complex Pt(C2H5C2C2H5)(PPh3)2 gives alkyne-free oxidative addition products PtI(CH3) (PPh3)2 and PtI2 (PPh3)2 exclusively. In contrast, the strained cyclic alkyne complexes Pt(C6H8)(PPh3)2, Pt(C7H10)(PPh3)2, Pt(C6H8) (dppe) and Pt(C7H10) (dppe)1 react with methyl iodide to give mainly 2-methylcycloalkenyiplatinum(II) complexes, e.g. PtI(C6H8CH3) (PPh3)2, formed by electrophilic attack on the metal-alkyne bond. Iodine reacts similarly with Pt(C6H8) (PPh3)2 and Pt(C7H10) (PPh3)2 to give 2-iodocycloalkenylplatinum(II) complexes but, in the case of the corresponding dppe complexes, PtI2(dppe) is the main product. The insertion reaction of methyl iodide with Pt(C6H8)(PPh3)2 proceeds via an oxidative addition intermediate PtI(CH3) (C6H8) (PPh3)2 which can be isolated. Trifluoromethyl iodide reacts with Pt(C6H8)(PPh3)2 to give a 2-iodocyclohexenyl complex Pt(CF3) (C6H8I) (PPh3)2 and with Pt(C7H10) (PPh3)2 to give PtI(CF3) (PPh3)2. 31P NMR data are given and discussed. 相似文献
18.
The thermal reaction of Ru3(CO)12 with ethacrynic acid, 4‐[bis(2‐chlorethyl)amino]benzenebutanoic acid (chlorambucil), or 4‐phenylbutyric acid in refluxing solvents, followed by addition of two‐electron donor ligands (L), gives the diruthenium complexes Ru2(CO)4(O2CR)2L2 ( 1 : R = CH2O‐C6H2Cl2‐COC(CH2)C2H5, L = C5H5N; 2 : R = CH2O‐C6H2Cl2‐COC(CH2)C2H5, L = PPh3; 3 : R = C3H6‐C6H4‐N(C2H4‐Cl)2, L = C5H5N; 4 : R = C3H6‐C6H4‐N(C2H4‐Cl)2, L = PPh3; 5 : R = C3H6‐C6H5, L = C5H5N; 6 : R = C3H6‐C6H5, L = PPh3). The single‐crystal structure analyses of 2 , 3 , 5 and 6 reveal a dinuclear Ru2(CO)4 sawhorse structure, the diruthenium backbone being bridged by the carboxylato ligands, while the two L ligands occupy the axial positions of the diruthenium unit. 相似文献
19.
Fatma S.M. Hassan 《Phosphorus, sulfur, and silicon and the related elements》2013,188(2):406-417
Complexes of the type [Pt R2 (dppma-PP′)] (R─Me, Et, Ph, CH2Ph, C6H4 Me-p, C6H4OMe-2, CH2CMe3, 1-naphthyl, C6H4Me-o, dppma = Ph2PNMe PPh2) have been prepared from [PtCl2, (dppma-PP′)] and the corresponding alkyl-lithium or Grignard reagents. Equilibrium constants, k, for the conversion of [PtR2 (dppma-PP′)] into cis-[PtR2(dppma-P)2] with dppma were studied using 31P NMR spectroscopy at room temperature. Equilibrium is rapidly established for R─C6H4-Me-o, at 20°C. Complex of the type cis-[PtR2 (dppma-P)2] was isolated R─C6H4 Me-o. The complexes [PtMe2(dppma-P)2] and [Pt(o-methoxyphenyl)2(dppma-P)2] were prepared, but unfortunately decomposed once isolated, the only evidence for its formation being from 31P-{1H} NMZR spectroscopy. The o-tolyl or 1-naphthyl complexes exist as syn-anti mixtures in solution, due to restricted rotation around the platinum aryl bonds. Treatment of several complexes of the type [PtR2(dppma-PP′)] with MeI gives [PtR2Me(I)(dppma-PP′)] with trans addition of MeI. Treatment of [PtR2(dppma-PP′)] with HCl gives [Pt Cl (R) (dppma-PP′)] for R─C6H2Me3-2,4,6, C6H4-CH3-2, C6H4-Me-4, Me, 1-naphthyl. The 1H, 31P NMR parameters for these complexes are discussed. Attempted preparation of complexes of the type [PtR2 (dppma-P)2M] (R─C6H4-Me-2, Me CN-C6H4-Me-4); M─Pd, Pt, Au,) are reported. 相似文献
20.
Ruthenium(II)‐Komplexe mit orthometallierten O'Donnell Schiffbasen (Diphenylmethylenglycinester) [1]
Ruthenium(II) Complexes of Orthometallated O'Donnell Schiff Bases (Diphenylmethylene Glycine Esters) [1] The reaction of diphenyl methylene glycine esters with [Ru(PPh3)3Cl2] gives the orthometallated complexes [Ru(PPh3)2(Cl){(C6H4)(C6H5)C=NCH2CO2R}] (R = H, Et, CMe3) in which the ester group is coordinated to the ruthenium atom and which were characterized by IR, NMR, MS data and by cyclovoltammetry. 相似文献