cis-[Pt(C2H4)Cl2(PMe2Ph)] | 38498-20-3

• 英文名称: cis-[Pt(C2H4)Cl2(PMe2Ph)]
• 英文别名: cis-{PtCl2(C2H4)(PMe2Ph)}
• CAS: 38498-20-3
• 化学式: C₁₀H₁₅Cl₂PPt
• 分子量: 432.189
• InChiKey: YQIYECVCXMXMRZ-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
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• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  cis-[Pt(C2H4)Cl2(PMe2Ph)] 、 2-trimethylstannylbenzofuran 以 二氯甲烷 为溶剂， 以80%的产率得到[Pt(2-benzo[b]furyl)2Cl2(PMe2Ph)2]
  参考文献：
  名称：

  芳基锡化合物在制备二芳基和二芳酰基-二-µ-氯-双（三有机膦）二铂（II）配合物中的用途

  摘要：

  配合物顺式-[Pt（C 2 H 4）Cl 2 L]（L =三有机膦）与化合物SnRMe反应，（R =芳基）（1摩尔当量），得到氯化物桥连的芳基铂配合物[Pt 2 R 2 Cl 2 L 2 ]，以顺式和反式异构体的混合物形式存在于溶液中。[Pt 2 R 2 Cl 2 L 2 ]络合物与配体物种L'[L'= NCMe，SBu t 2，吡啶，NBu n H 2，AsPh 3，PEt 3反应，PBu n 3，PPh 3或P（OPh）3 ]得到单核络合物[PtR（Cl）L（L'）]，这代表了在铂上具有四个不同配体的单核络合物的极佳途径。然而，环辛基1,5-二烯（cod）产生[PtR（Cl）L 2 ]和[Pt（cod）R（Cl）]，而2,2'-联吡啶基（bipy）给出盐[PtR （bipy）L] Cl。硫氰酸钠与[Pt 2（C 6 H 4 Me- p）2 Cl 2（PEt 2 Ph）2 ]反应，得到硫氰酸酯桥连的[Pt

  DOI：

  10.1039/dt9780001288

文献信息

• Stoichiometric model reactions in olefin hydroformylation by platinum-tin systems
  作者：Montserrat Gomez、Guillermo Muller、Daniel Sainz、Joaquim Sales、Xavier Solans

  DOI：10.1021/om00058a019

  日期：1991.12

  The three independent steps involved in the hydroformylation process, insertion of the olefin, insertion of carbon monoxide, and hydrogenolysis, have been investigated with use of platinum-tin catalysts and 1-pentene as olefin at low pressure and temperature in CH2Cl2. In the temperature range 198-308 K, the three reactions can be studied consecutively. All the intermediates observed were prepared and characterized separately. The complex trans-[PtH(SnCl3)(PPh3)2] was used as the initial compound for this sequence. The hydrido complex crystallized in the monoclinic space group C2/c, with a = 31.345 (5) angstrom, b = 12.716 (3) angstrom, c = 18.135 (3) angstrom, beta = 96.5 (2)-degrees, Z = 8, and R (R(w)) = 0.056 (0.060) for 3235 independent reflections having I > 2.56-sigma(I). The large Pt-Sn bond (2.601 (1) angstrom) distance correlates satisfactorily with the low 1J(Pt-Sn) value. The Pt-Sn bond is necessary for the insertion of 1-pentene in the hydrido-platinum complex and for the hydrogenolysis of the acyl compounds under these mild conditions. The insertion of 1-pentene was observed at 198 K, giving the cis-alkyl complex; CO insertion took place after isomerization to the trans-alkyl complex. The instability of Pt-Sn and Pt-C bonds in the trans-acyl complex favors easy decarbonylation or loss of SnCl2, so any other platinum complex without tin accepts SnCl2 from the acyl complex. The hydrogenolysis of trans-[Pt(SnCl3)(COC5H11)(PPh3)2] under 1.5 bar of H2-CO (1:1) did not yield n-hexanal quantitatively; only 12% of n-hexanal was formed. Thus, decarbonylation was the main process observed. From the reactions studied, it is possible to propose the following order of Pt-Sn bond stability: trans-[Pt(SnCl3)(COC5H11)(PPh3)2] < [Pt(SnCl3)(C5H11)(PPh3)2] < trans-[PtH-(SnCl3)(PPh3)2] < [PtH(SnCl3)(CO)(PPh3)2] < [Pt(mu-Cl)(SnCl3)(PPh3)]2 < [PtCl(SnCl3)(PPh3)]- < [PtCl2(SnCl3)2]2-. The insertion reactions studied with cis-[PtCl2(olefin)(PR3)] as an olefin carrier and the hydrido-platinum complexes trans-[PtHCl(PPh3)2], trans-[PtH(SnCl3)(PPh3)2], and [PtH(SnCl3)-(CO)(PPh3)2] as hydrogen carriers exclude the participation of intermolecular steps by reaction of two different platinum complexes under the experimental conditions described.