作者:Ken Tsutsumi、Hayato Sakai、Kazuyuki Sakonaka、Tomomi Yabukami、Yoshiteru Takahashi、Yuzo Nakagai、Tsumoru Morimoto、Kenji Tabata、Kiyomi Kakiuchi
DOI:10.1002/ejic.200901191
日期:2010.6
amounts of Pt(C2H4)(PPh3)2 in C6D6 produced cis-(PPh3)2PtX(η1-CH2C≡CC≡CPh) (cis-2) as a kinetic product. Complex cis-2 isomerized to trans-(PPh3)2PtX(η1-CH2C≡CC≡CPh) (trans-2) or trans-(PPh3)2PtX[η1-C(C≡CPh)=C=CH2] (trans-3) under some reaction conditions. In contrast to the reaction of Pt(C2H4)(PPh3)2, treatment of 1 with Pt(PPh3)4 generated cationic platinacyclobutene [(PPh3)2Ptη2-CH2C(PPh3)=C(C≡CPh)}]+Cl–
戊二炔基卤化物 XCH2C≡CC≡CPh (1) 与等摩尔量的 Pt(C2H4)(PPh3)2 在 C6D6 中的反应产生 cis-(PPh3)2PtX(η1-CH2C≡CC≡CPh) (cis-2) 作为动力学产物。络合物 cis-2 异构化为 trans-(PPh3)2PtX(η1-CH2C≡CC≡CPh) (trans-2) 或 trans-(PPh3)2PtX[η1-C(C≡CPh)=C=CH2] (trans- 3) 在某些反应条件下。与 Pt(C2H4)(PPh3)2 的反应相反,用 Pt(PPh3)4 处理 1 生成阳离子铂环丁烯 [(PPh3)2Ptη2-CH2C(PPh3)=C(C≡CPh)}]+Cl – (5) 连同 cis-2 和 trans-2。此外,2当量。Pt(C2H4)(PPh3)2 和 1 提供 η1,η2-配位的双铂配合物 cis-(PPh3)2PtCl