Completion of the series of M2(hpp)4Cl2 compounds from W to Pt:: The W, Os, and Pt compounds

被引：43

作者：

Clérac, R

Cotton, FA ^{[1
]}

Daniels, LM

Donahue, JP

Murillo, CA

Timmons, DJ

机构：

[1] Texas A&M Univ, Mol Struct & Bonding Lab, College Stn, TX 77843 USA

[2] Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA

[3] Michigan State Univ, Coll Nat Sci, Dept Chem, E Lansing, MI 48824 USA

[4] Univ Costa Rica, Dept Chem, San Jose, Costa Rica

来源：

INORGANIC CHEMISTRY | 2000年 / 39卷 / 12期

关键词：

D O I：

10.1021/ic991370v

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The series of M-2(hpp)(4)Cl-2 complexes (hpp is the anion of 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine) from M = W to M = Pt has been completed by the preparation and characterization of those with M = W, Os, and Pt. W-2(hpp)(4)Cl-2 (1) has a W-W distance of 2.250(2) Angstrom, is diamagnetic, and can be assigned a W-W triple bond based on a sigma(2)pi(4) electron configuration. Os-2(hpp)(4)Cl-2 (2) has an Os-Os distance of 2.379(2) Angstrom and displays a temperature-independent paramagnetism. It can be assigned a sigma(2)pi(4)delta(2)delta(*2)configuration. Pt-2(hpp)(4)Cl-2 has a Pt-Pt distance of 2.440(1) Angstrom and is diamagnetic. A bond order of 1, based on a configuration in which only the sigma* orbital is empty, is consistent with these data.

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页码：2581 / 2584

页数：4

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