ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Single-Crystal X-Ray Analysis of Compounds with a Covalent Metal-Metal Bond, I The Molecular and Crystal Structure of Octacarbonyl-bis[μ(pentacarbonylmanganese)-gallium(III)]-dimanganese and Octacarbonyl-bis[μ-(pentacarbonylmanganese)indium(III)]-dimanganeseThe title compounds are isomorphous. The molecules Mn2(CO)8{μ-MMn(CO)5}2 (M = Ga, In) show no essential differences in structural pattern. They contain a planar M2Mn2 ring, in which the Mn—Mn distance [Ga: Mn—Mn = 3.052 (1) Å, In: Mn—Mn = 3.227 (1) Å] and the acute angle at the bridging atom Ga or In [Mn—Ga—Mn = 76.86(2)°, Mn—In—Mn = 76.36(2)°] are consistent with the existence of a Mn—Mn bond. The Mn atoms of the two Mn(CO)5 ligands have a trans-configuration with respect to the plane of the M2Mn2-metal ring. The mean values for the remaining bond distances are: Ga—Mn = 2.451 (1) Å, In—Mn = 2.605 (1) Å, Mn—C = 1.842 (5) Å, and Mn—C = 1.804(4) Å, C—O = 1.144 (7) Å.
Notes:
Die Titelverbindungen sind isomorph. Die Moleküle Mn2(CO)8{μ-MMn(CO)5}2 (M = Ga, In) zeigen im Aufbau keine wesentlichen Unterschiede. Sie enthalten einen ebenen M2Mn2-Metallring, in dem der Mn—Mn-Abstand [Ga: Mn—Mn = 3.052 (1) Å; In: Mn—Mn = 3.227 (1) Å] und der spitze Winkel am Brückenatom Ga bzw. In [Mn—Ga—Mn = 76.86 (2)°, Mn—In—Mn = 76.36 (2)°] eine Bindung zwischen den Manganatomen erkennen lassen. Die Mn-Atome der beiden Mn(Co)5 Liganden liegen in trans-Stellung zur M2Mn2-Ringebene vor. Die Mittelwerte der übrigen Bindungsabstände betragen: Ga—Mn = 2.451 (1) Å, In—Mn = 2.605 (1) Å, Mn—C = 1.842 (5) Å und Mn—C = 1.804(4) Å, C—O = 1.144(7) Å.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19741070908
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