REACTIONS OF (ETA3-FORMALDEHYDE)ZIRCONOCENE DIMER WITH HETEROCUMULENES

被引：20

作者：

ERKER, G ^{[1
]}

MENA, M ^{[1
]}

WERNER, S ^{[1
]}

KRUGER, C ^{[1
]}

机构：

[1] MAX PLANCK INST COAL RES,W-4330 MULHEIM,GERMANY

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1990年 / 390卷 / 03期

关键词：

D O I：

10.1016/0022-328X(90)85099-K

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The (η2-formaldehyde)zirconocene dimer (Cp2ZrOCH2)2 (7) inserts CO2 into the zirconium to carbon bond of the metallaoxirane moiety to give [(Cp2ZrOCH2)(Cp2ZrOCH2OCO)] (8). Reaction with diphenylketene 7 gives the cyclodimeric 1 : 1 addition product (Cp2ZrOCH2OCCPh2)2 (10) via the mono-insertion product 9. Similarly, treatment of 7 with t-butylisocyanate yields the intermediate complex [(Cp2ZrOCH2)(Cp2ZrOCH2OCNCMe3)] (11) which gives the final product (Cp2ZrOCH2OCNCMe3)2 (12). Here two five-membered metallacycles are joined together by oxygen bridges via a central four-membered Zr2O2 metallacycle. Complex 12 was characterized by X-ray diffraction. It crystallizes in space group P21/n with cell parameters a 10.142(1), b 17.949(2), c 12.001(1) Å, β = 114.27(1)°; Z = 2, R = 0.055, Rw = 0.054. © 1990.

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页码：323 / 331

页数：9

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