The crystal structures of MoMe2(η6-C6H6)(PPhMe2)2and MoMe2(η6-C6H5Me)(PPhMe2)2

Autor:	Jerry L. Atwood, Geoffrey Wilkinson, Robin D. Rogers, William E. Hunter, Ernesto Carmona-Guzman
Rok vydání:	1979
Předmět:	Crystallography chemistry.chemical_compound chemistry Diene Molybdenum chemistry.chemical_element General Chemistry Crystal structure Triclinic crystal system Toluene Derivative (chemistry) Methyl group Monoclinic crystal system
Zdroj:	J. Chem. Soc., Dalton Trans.. :1519-1523
ISSN:	1364-5447 0300-9246
DOI:	10.1039/dt9790001519
Popis:	The crystal structure of MoMe2(η6-C6H5)(PPhMe2)2 and MoMe2(η6-C6H5Me)(PPhMe2)2 have been determined from three-dimensional X-ray diffraction data collected by counter methods. The former crystallizes in the monoclinic space group P21/n with a= 8.108(4), b= 24.287(8), c= 11.961(5)A, β= 96.59(4)°, and Z= 4 for Dc= 1.36 g cm–3. The final R value was 0.035 based on 1 271 independent observed reflections. MoMe2(η6-C6H5Me)(PPhMe2)2 crystallizes in the triclinic space group P with a= 9.128(2), b= 9.611 (2), c= 14.842(3)A, α= 105.44(3), β= 93.72(3), γ= 102.47(3)°, and Z= 2 for Dc= 1.35 g cm–3. The R value was 0·019 for 3 586 observed reflections. The presence of the methyl group on the toluene ligand does not appreciably alter the electronic environment of the molybdenum atom. In the toluene derivative the two Mo–C(σ) bonds average 2.291 (5)A. The Mo–C(σ) lengths range from 2.250(2) to 2.344(2)A, and are seen to vary in a pair-wise fashion such that the arene shows a tendency to act as a diene.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c464310a7aa753ade869f8a920181e04 https://doi.org/10.1039/dt9790001519 Zobrazit plný text záznamu