GENERATION OF (MU-ETHYNEDIYL)(METHYLALKOXYCARBENE)DIPLATINUM COMPLEXES FROM REACTION OF CIS,TRANS-[(OC)(C6F5)(2)PT(MU-ETA(2)-C-CSIME(3))PT(C-CSIME(3))L(2)] WITH ROH (R=ET, ME)

被引：18

作者：

BERENGUER, JR

FORNIES, J

LALINDE, E

MARTINEZ, F

机构：

[1] UNIV ZARAGOZA, CSIC, INST CIENCIA MAT ARAGON, DEPT QUIM INORGAN, E-50009 ZARAGOZA, SPAIN

[2] UNIV LA RIOJA, DEPT QUIM, E-26001 LOGRONO, SPAIN

来源：

ORGANOMETALLICS | 1995年 / 14卷 / 05期

关键词：

D O I：

10.1021/om00005a059

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of cis-[Pt(C6F5)2(CO)(THF)I with trans-[Pt(C=CSiMe(3))(2)L(2)], followed by reaction of the neutral mu-eta(2)-monoacetylide-bridged diplatinum intermediates cis,trans-[(OC)(C6F5)(2)-Pt(mu-eta(2)-C=CSiMe(3))Pt(Cxba=CSiMe(3))L(2)] (L = PPh(3) (1), PEt(3) (2)) with alcohols (EtOH, MeOH) yields the (mu-ethynediyl)(methylalkoxycarbene)diplatinum species cis,trans-[(OC)(C6F5)(2)-Pt-C=C-Pt{C(Me)OR}L(2)] (L = PPh(3), R = Et (3a), Me (3b); L = PEt(3), R = Et (4a), Me (4b)), resulting from unexpected rearrangement chemistry involving bridging and terminal (trimethylsilyl)acetylide ligands. The X-ray molecular structure of the complex cis,trans-[(oc)(C6F5)(2)Pt-C=C-Pt{C(Me)OEt}(PEt(3))(2)] (4a) has been determined. It crystallizes in the monoclinic system, space group P2(1)/c with a = 15.216(3) Angstrom, b = 14.197(4) Angstrom, c = 18.167(5) Angstrom, beta = 107.99(2)degrees, V = 3733(2) Angstrom(3),, and Z = 4. The two coordination planes around the platinum atoms adopt an almost eclipsed arrangement (dihedral angle 6.7 degrees) rather than the staggered form found in similar diplatinum complexes.

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页码：2532 / 2537

页数：6

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