15308-61-9Relevant academic research and scientific papers
Electrochemical generation and reactivity of bis(triphenylphosphine)platinum(0): An electrosynthesis of platinum-acetylene complexes
Davies, Julian A.,Eagle, Cassandra T.,Otis, Deborah E.,Venkataraman, Uma
, p. 1264 - 1266 (1986)
Controlled potential bulk reductive electrolysis of cis-[PtCl2(PPh3)2] results in the generation of [Pt(PPh3)2] in solution. This 2-coordinate, 14-electron compound is efficiently trapped by acetylene
Reactions of binuclear ruthenium-platinum μ-allenyl complexes with nucleophilic and electrophilic reagents. The characterization of two 1:1 adducts of L(PPh3)Pt(μ-η1:η2α,β-C(Ph)=C=CH2)Ru(CO)Cp (L=PPh3, t-BuNC) and p-toluenesulfonyl isocyanate
Willis, Richard R.,Calligaris, Mario,Faleschini, Paolo,Gallucci, Judith C.,Wojcicki, Andrew
, p. 465 - 478 (2007/10/03)
Reactions of (PPh3)2Pt(μ-η1:η2α,β-C(R)=C=CH2)Ru(CO)Cp (R=H (1), Ph (2)) with Ph2PCH2CH2CH2PPh2, PEt3 and t-BuNC in THF at -78°C to room temperature afforded the substitution products L2Pt(μ-η1:η2α,β-C(R)=C=CH2)Ru(CO)Cp (R=H, L2=Ph2PCH2CH2CH2PPh2 (3), R=Ph, L2=Ph2PCH2CH2CH2PPh2 (4), R=H, L2=2PEt3 (5), R=Ph, L2=PPh3 and t-BuNC (6)). No reaction was observed for 1 with Et2NH or C6H11NH2 and 2 with p-TolS(O)2NH2 in THF at reflux temperature. Complex 2 reacted with p-TolS(O)2NCO (TSI) in toluene at -78°C to room temperature to yield two 1:1 addition products of the reactants: the γ-carbon substituted μ-allenyl (PPh3)2Pt(μ-η1:η2α,β-C(Ph)=C=CHC(O)NHS(O)2Tol-p) (7) and the [3+2] cycloadduct (PPh3)2Pt(μ-η1:η2-C=C(Ph)N(S(O)2Tol-p)C(O)CH2)Ru(CO)Cp (8). Complexes 4 and 6 afforded with TSI, under essentially similar conditions, only [3+2] cycloadducts, L2Pt(μ-η1:η2-C=C(Ph)N(S(O)2Tol-p)C(O)CH2)Ru(CO)Cp (L2=Ph2PCH2CH2CH2PPh2 (9), PPh3 and t-BuNC (10)). All products were characterized by a combination of IR and NMR (1H, 13C{1H} and 31P{1H}) spectroscopy, FAB MS and elemental analysis. The structures of 7 (as 7·C3H6O) and 10 were determined by single-crystal X-ray diffraction analysis. Reactions of 2 with trans-NCCH=CHCN (L) and of 1 with the alkynes MeO2CC?CCO2Me, MeO2CC?CMe, PhC?CH and PhC?CPh (L) resulted in the formation of the mononuclear metal complexes Cp(CO)2RuC(R)=C=CH2 (R=H, Ph) and (PPh3)2PtL. The reverse of this fragmentation reaction occurred when Cp(CO)2RuCH=C=CH2 was treated with (PPh3)2Pt(PhC?CPh). No reaction was observed between 2 and each (CN)2C=CPh2 and MeS(O)2NSO in benzene or toluene on heating. The η1-allenyl Cp(CO)2RuC(Ph)=C=CH2, obtained in this study, is a new compound.
Synthesis, structure and reactivity of N,O-metallacyclic (dicarbonyldiazene) platinum complexes
Chan, Danny,Cronin, Leroy,Duckett, Simon B.,Hupfield, Peter,Perutz, Robin N.
, p. 511 - 516 (2008/10/08)
Reaction of cis-Pt(PR13)2Cl2 (R1 = Me, Ph) with diacyl hydrazine R2OCNHNHCOR2 (R2 = Me, Ph) in refluxing ethanol and NaHCO3 afforded platinum diazene diacyl complexes Pt(PR13)2(R2OCNNCOR2) (1, R1 = R2 = Ph; 3, R1 = Me, R2 = Ph; 4, R1 = R2 = Me). Reaction of Pt(PPh3)2(C2H4) with diazene dicarboxylates R2OCNNCOR2 (R2 = OEt, OPri) resulted in the formation of Pt(PPh3)2(R2OCNNCOR2) (2, R2 = OEt; 5, R2 = OPri). Multinuclear NMR spectroscopy on 1-5 revealed that the dicarbonyl-substituted diazene ligand is coordinated asymmetrically, consistent with a five membered Pt-N-N-C-O ring. Compound 5 crystallises from THF-benzene as the solvate Pt(PPh3)2(PriO2CNNCO 2Pri)·(C6H6)2; its X-ray crystal structure shows that the coordination sphere of platinum is essentially square planar and coplanar with the five membered Pt1-O1-C5-N2-N1 ring. The Pt1-O1 distance is 2.027(4) A and the Pt1-N1 distance is 2.050(5) A. The N1-N2 distance is 1.421(6) A while the N2-C5 and C5-O1 distances are 1.273(7) and 1.314(7) A, respectively. Complexes 1-5 show sensitivity towards chlorinated solvents (CH2Cl2, CHCl3) under photolysis conditions, forming the corresponding cis-platinum bis(phosphine) dichloride complexes; the same products are formed in a slower thermal reaction with 2 and 5. Complexes 2 and 5 react photochemically with ethylene in [2H8]THF yielding Pt(PPh3)2(C2H4) but 1, 3 and 4 are inert. Addition of an excess of dppe ligand to 2 and 5 resulted in the displacement of PPh3 and the formation of Pt(dppe)(EtO2CNNCO2Et) and Pt(dppe)(PriO2CNNCO2Pri) [dppe = 1,2-bis(diphenylphosphino)ethane].
Synthesis and Reactivity of N-Acetylamino acidate(2-) and Related Complexes of Platinum(II)
Kemmitt, Raymond D. W.,Mason, Simon,Fawcett, John,Russell, David R.
, p. 1165 - 1176 (2007/10/02)
Treatment of the complexes (L = P-donor ligand) with the N-acetyl derivatives of the amino acids glycine, DL-alanine, DL-methionine or L-phenylalanine in the presence of an excess of silver(I) oxide in refluxing dichloromethane affords PtN(COM
PHOTOINDUCED REDUCTIVE ELIMINATION OF CYANOALKANES FROM HYDRIDOCYANOALKYL COMPLEXES OF PLATINUM(II)
Sostero, Silvana,Traverso, Orazio,Ros, Renzo,Michelin, Rino A.
, p. 325 - 330 (2007/10/02)
The photoinduced reductive elimination of cyanoalkanes (CH3CN, CH3CH2CN and CH3(CH2)2CN) from trans-hydridocyanoalkyl complexes of platinum(II), (R = CH2CN, (CH2)2CN, (CH2)3CN) has been studied.The three trans complexes undergo isomerizati
