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Preparation of tetraalkyl phosphine complexes of the f-block metals. Crystal structure of Th(CH/sub 2/Ph)/sub 4/(Me/sub 2/PCH/sub 2/CH/sub 2/PMe/sub 2/) and U(CH/sub 2/Ph)/sub 3/Me(Me/sub 2/PCH/sub 2/CH/sub 2/PMe/sub 2/)

Journal Article · · Organometallics; (United States)
DOI:https://doi.org/10.1021/om00080a023· OSTI ID:5814605
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Reaction of 4 molar equiv of PhCH/sub 2/Li with MCl/sub 4/(Me/sub 2/PCH/sub 2/CH/sub 2/PMe/sub 2/)/sub 2/ gives M(CH/sub 2/Ph)/sub 4/ (Me/sub 2/PCH/sub 2/CH/sub 2/PMe/sub 2/), where M is Th or U. Reaction of a mixture of 3 molar equiv of PhCH/sub 2/Li and 1 molar equiv of MeLi with MCl/sub 4/(Me/sub 2/PCH/sub 2/CH/sub 2/PMe/sub 2/)/sub 2/ gives the unsymmetrical alkyls M(CH/sub 2/Ph)/sub 3/Me(Me/sub 2/PCH/sub 2/CH/sub 2/PMe/sub 2/), where M is Th or U. The molecular structure of Th(CH/sub 2/C/sub 6/H/sub 5/)/sub 4/(Me/sub 2/PCH/sub 2/CH/sub 2/PMe/sub 2/) and U(CH/sub 2/C/sub 6/H/sub 5/)/sub 3/Me(Me/sub 2/PCH/sub 2/CH/sub 2/PMe/sub 2/) were determined by single-crystal X-ray diffraction methods, and the crystal parameters are reported. In the Th complex there are two independent molecules in the unit cell. The Th atoms are each bonded to four benzyl groups and to two phosphorus atoms from the bis(dimethylphosphino)ethane ligand; the average Th-C distance is 2.55 (2) A, and the average Th-P distance is 3.17 (3) A. In the U complex the uranium atom is bonded to a methyl group, three benzyl groups, and the two phosphorus atoms of the bis(dimethylphosphino)ethane ligand. The U-C(methyl) distance is 2.41 (1) A; the average U-C(benzyl) distance is 2.50 (4) A. 23 references, 3 figures, 7 tables.
Research Organization:
Univ. of California, Berkeley
DOE Contract Number:
AC03-76SF00098
OSTI ID:
5814605
Journal Information:
Organometallics; (United States), Journal Name: Organometallics; (United States) Vol. 3:2; ISSN ORGND
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
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ACTINIDE COMPOUNDS
CHEMICAL PREPARATION
COHERENT SCATTERING
CRYSTAL STRUCTURE
DATA
DIFFRACTION
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
MOLECULAR STRUCTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOSPHINES
PHOSPHORUS COMPOUNDS
SCATTERING
SYNTHESIS
THORIUM COMPOUNDS
URANIUM COMPOUNDS
X-RAY DIFFRACTION