1,2-Dibenzyl and -Diaryltetradimethylamido-dimolybdenum and -Ditungsten Compounds: M2R2(NMe2)4 (M=M). Structural Effects of Me2N-to-M Alpha-Bonding.

Abstract

From the reactions between RMgC1 (R = CH2C6H5 and CH2-p-tolyl) or LiR. (R = C6H5, p- and o-tolyl) (2 equiv) and 1,2-M2C12 (NMe2)4 compounds in hydrocarbon solvents, the new compounds 1,2-M2R2(NME2)4 (M=M), where M = Mo and W, have been isolated and characterized by a variety of physico-chemical techniques. The new compounds which are air-sensitive, hydrocarbon soluble and diamagnetic, are related to the 'ethane-like' dimers previously characterized for R = alkyl. The compound 1,2-Mo2(CH2C6H5)2(NMe2)4 crystallizes in the space group P21/a with a = 17.595(7) A, b = 16.038(6) A, c = 10.542(4) A, beta = 122.11(2) (o), with Z = 4. Pertinent bond distances and bond angles (averaged) are Mo-Mo = 2.200(1) A, Mo-N = 1.95(1) A, Mo-C = 2.19(1) A, Mo-Mo-N = 104(1)(o), Mo-Mo-C = 100(1)(o).

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Document Details

Document Type
Technical Report
Publication Date
Jul 07, 1982
Accession Number
ADA117987

Entities

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  • D. A. Haitko
  • J. C. Huffman
  • K. Folting
  • M. H. Chisholm
  • M. J. Chetcuti

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  • Indiana University

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  • Air Platforms
  • C4I

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  • Alkanes
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