Chemistry of bis(cyclo-octa-1,5-diene)platinum: reactions with electrophiles

Chemistry of bis(cyclo-octa-1,5-diene)platinum: reactions with electrophiles
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双(环辛基-1,5-二烯)铂的化学:与亲电子试剂的反应

DOI:
10.1039/dt9770002228
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发表时间:
1977
期刊:
Journal of The Chemical Society-dalton Transactions
影响因子:
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通讯作者:
F. Stone
F. Stone
中科院分区:
--
文献类型:
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作者:
Michael J. Green;D. M. Grove;J. Spencer;F. Stone

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双(环辛-1,5-二烯)铂[Pt(cod)2]与β-二酮乙酰基、六氟乙酰基和三氟乙酰基丙酮反应,生成环辛-4-烯-1-基铂配合物[Pt(1-σ,4 -5-η-C8 H13)(L2)](L2= acac,hfacac,或tfacac)。[Pt(cod)2]的质子化[HBF 4或HPF 6-(CF 3CO)2 O]生成盐[Pt(1-σ,4 -5-η-C8 H13)(cod)][X](X = BF 4-或PF 6-):相同的阳离子物种由CF 3CO 2 H形成。亲电试剂[C_7H_6R][BF_4](R = H或Ph)与[Pt(cod)_2]反应,生成流动配合物[Pt(C_7H_6R)(cod)][BF_4]。[MCl_2(cod)](M = Pt或Pd)与Ag[BF_4]在cod存在下反应,分别得到[Pt(1-σ,4 -5-η-C_8H_(13)(cod)][BF_4]和[Pd(1-3-η-C_8H_(13)(cod)][BF_4]。前一种产物与(PhO)3 P反应生成[PtH{(PhO)3 P}3][BF 4],与(MeO)3 P或(EtO)3 P反应生成[PtH{(RO)3 P}4][BF 4]。五配位磷复盐配合物在溶液中经历动力学行为。
Bis(cyclo-octa-1,5-diene)platinum, [Pt(cod)2], reacts with the β-diketones acetyl-, hexafluoroacetyl-, and trifluoroacetyl-acetone to give (cyclo-oct-4-en-1-yl)platinum complexes [Pt(1-σ,4–5-η-C8H13)(L2)](L2= acac, hfacac, or tfacac). Protonation [HBF4 or HPF6–(CF3CO)2O] of [Pt(cod)2] yields salts [Pt(1-σ,4–5-η-C8H13)(cod)][X](X = BF4– or PF6–) : the same cationic species is formed from CF3CO2H. The electrophilic reagents [C7H6R][BF4](R = H or Ph) react with [Pt(cod)2] to give fluxional complexes [Pt(C7H6R)(cod)][BF4]. Treatment of [MCl2(cod)](M = Pt or Pd) with Ag[BF4] in the presence of cod yields [Pt(1-σ,4–5-η-C8H13)(cod)][BF4] and [Pd(1–3-η-C8H13)(cod)][BF4], respectively. The former product reacts with (PhO)3P to give [PtH{(PhO)3P}3][BF4], and with (MeO)3P or (EtO)3P to form [PtH{(RO)3P}4][BF4]. The five-co-ordinate hydridophosphite complexes undergo dynamic behaviour in solution.