Two chloro-bridged osmium clusters

Weng Kee Leong; Frederick W.B. Einstein; Roland K. Pomeroy

doi:10.1107/S0108270196012073

Two chloro-bridged osmium clusters

Weng Kee Leong^*, Frederick W.B. Einstein, Roland K. Pomeroy

^*Corresponding author for this work

National University of Singapore

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The molecular structure of the chloro-bridged tetra-osmium cluster, dodecacarbonyl-1κ³C,2κ³C,3κ³ C,4κ³C-μ-chloro-3:4κ³ Cl-tris-μ-hydrido-1: 2κ²H;1:3κ²H;2:4κ² H-tetraosmium(5 Os-Os), [Os₄(μ-Cl)(μ-H)₃(CO)₁₂], consists of a 'butterfly' arrangement of Os atoms, just as in the iodo analogue. The chloro bridge in the tetraosmium cluster is symmetric, whereas in the pentaosmium cluster, tetradecacarbonyl-1κ³C,2κ²C,3κ³ C,4κ³C,5κ³-μ-chloro-2:5κ² Cl-tris-μ-hydrido-1:2κ²H;2:3 κ²H;2:4κ² H-pentaosmium(8 Os-Os), [Os₅(μ-Cl)(μ-H)₃(CO)₁₄], it is distinctly asymmetric. This asymmetry is attributed to the trans influence of a carbonyl ligand, which lengthens the trans-Os-Cl bond.

Original language	English
Pages (from-to)	24-27
Number of pages	4
Journal	Acta Crystallographica Section C: Crystal Structure Communications
Volume	53
Issue number	pt 1
DOIs	https://doi.org/10.1107/S0108270196012073
Publication status	Published - Jan 1 1997
Externally published	Yes

ASJC Scopus Subject Areas

General Biochemistry,Genetics and Molecular Biology

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title = "Two chloro-bridged osmium clusters",

abstract = "The molecular structure of the chloro-bridged tetra-osmium cluster, dodecacarbonyl-1κ3C,2κ3C,3κ3 C,4κ3C-μ-chloro-3:4κ3 Cl-tris-μ-hydrido-1: 2κ2H;1:3κ2H;2:4κ2 H-tetraosmium(5 Os-Os), [Os4(μ-Cl)(μ-H)3(CO)12], consists of a 'butterfly' arrangement of Os atoms, just as in the iodo analogue. The chloro bridge in the tetraosmium cluster is symmetric, whereas in the pentaosmium cluster, tetradecacarbonyl-1κ3C,2κ2C,3κ3 C,4κ3C,5κ3-μ-chloro-2:5κ2 Cl-tris-μ-hydrido-1:2κ2H;2:3 κ2H;2:4κ2 H-pentaosmium(8 Os-Os), [Os5(μ-Cl)(μ-H)3(CO)14], it is distinctly asymmetric. This asymmetry is attributed to the trans influence of a carbonyl ligand, which lengthens the trans-Os-Cl bond.",

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N2 - The molecular structure of the chloro-bridged tetra-osmium cluster, dodecacarbonyl-1κ3C,2κ3C,3κ3 C,4κ3C-μ-chloro-3:4κ3 Cl-tris-μ-hydrido-1: 2κ2H;1:3κ2H;2:4κ2 H-tetraosmium(5 Os-Os), [Os4(μ-Cl)(μ-H)3(CO)12], consists of a 'butterfly' arrangement of Os atoms, just as in the iodo analogue. The chloro bridge in the tetraosmium cluster is symmetric, whereas in the pentaosmium cluster, tetradecacarbonyl-1κ3C,2κ2C,3κ3 C,4κ3C,5κ3-μ-chloro-2:5κ2 Cl-tris-μ-hydrido-1:2κ2H;2:3 κ2H;2:4κ2 H-pentaosmium(8 Os-Os), [Os5(μ-Cl)(μ-H)3(CO)14], it is distinctly asymmetric. This asymmetry is attributed to the trans influence of a carbonyl ligand, which lengthens the trans-Os-Cl bond.

AB - The molecular structure of the chloro-bridged tetra-osmium cluster, dodecacarbonyl-1κ3C,2κ3C,3κ3 C,4κ3C-μ-chloro-3:4κ3 Cl-tris-μ-hydrido-1: 2κ2H;1:3κ2H;2:4κ2 H-tetraosmium(5 Os-Os), [Os4(μ-Cl)(μ-H)3(CO)12], consists of a 'butterfly' arrangement of Os atoms, just as in the iodo analogue. The chloro bridge in the tetraosmium cluster is symmetric, whereas in the pentaosmium cluster, tetradecacarbonyl-1κ3C,2κ2C,3κ3 C,4κ3C,5κ3-μ-chloro-2:5κ2 Cl-tris-μ-hydrido-1:2κ2H;2:3 κ2H;2:4κ2 H-pentaosmium(8 Os-Os), [Os5(μ-Cl)(μ-H)3(CO)14], it is distinctly asymmetric. This asymmetry is attributed to the trans influence of a carbonyl ligand, which lengthens the trans-Os-Cl bond.

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Two chloro-bridged osmium clusters

Abstract

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