Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Dicarbonyl and tricarbonyl adducts of (W {triple_bond} V W){sup 6+}- containing complexes. Preparation and structures of W{sub 2}(OCMe{sub 2}CF{sub 3}){sub 6}(CO){sub 2} and W{sub 2}(OCMe(CF{sub 3}){sub 2}){sub 4}(NMe{sub 2}){sub 2}(CO){sub 3}

Journal Article · · Organometallics
; ; ; ;  [1]
  1. Indiana Univ., Bloomington, IN (United States)
+ Show Author Affiliations

Carbon monoxide adds reversibly to W{sub 2}(OR){sub 6} compounds to give W{sub 2}(OR)6(CO){sub 2} complexes (R = Si{sup t}BuMe{sub 2}, 1; CMe{sub 2}CF{sub 3}, 2; 2,6-Me{sub 2}C{sub 6}H{sub 3}, 3) wherein the CO ligands bond to alternate tungsten atoms in a manner that allows mixing of WW {pi} and W d{pi} to CO {pi}{sup *} bonding. In contrast to the homoleptic alkoxides above, the mixed amido-alkoxide complex W{sub 2}(OCMe(CF{sub 3}){sub 2}){sub 4}(NMe{sub 2}){sub 2} (4), which also takes up 2 equiv of CO, reacts further to give W{sub 2}(OCMe(CF{sub 3}){sub 2}){sub 4}(NMe{sub 2}){sub 2}(CO){sub 3} (6), which has an unusual structure wherein three CO ligands are bonded to a single tungsten atom and the W-W bond is supported by one NMe{sub 2} bridge. The formation of 6 is also reversible. 2 and 6 have been characterized by single-crystal X-ray crystallography, and all compounds have been characterized by {sup 1}H and {sup 13}[C{sup 1}H]C NMR spectroscopy. The results are compared to earlier studies of the addition of CO to M{sub 2}(OR){sub 6} complexes such as W{sub 2}(O{sup t}Bu){sub 6}, which give bridged monocarbonyl adducts, and that of Wolczanski et al. 12 refs., 2 figs., 6 tabs.

Sponsoring Organization:
USDOE
OSTI ID:
50797
Journal Information:
Organometallics, Journal Name: Organometallics Journal Issue: 5 Vol. 14; ISSN 0276-7333; ISSN ORGND7
Country of Publication:
United States
Language:
English

Similar Records

Cluster complexes containing ynamine ligands. 1. Synthesis and structural characterizations of the complexes Os sub 4 (CO) sub 11 (. mu. sub 3 -MeC sub 2 NMe sub 2 )(. mu. -MeC sub 2 NMe sub 2 )(. mu. sub 3 -S), Os sub 4 (CO) sub 11 (. mu. -C(Me)C(NMe sub 2 )C(NMe sub 2 )CMe)(. mu. sub 3 -S), Os sub 4 (CO) sub 11 (. mu. -C(NMe sub 2 )C(Me)C(Me)C(NMe sub 2 ))(. mu. sub 3 -S), Os sub 4 (CO) sub 9 (. mu. -MeC sub 2 NMe sub 2 )(. mu. -C(Me)C(NMe sub 2 )C(Me)C(NMe sub 2 ))-(. mu. sub 3 -S), and Os sub 3 (CO) sub 7 (. mu. sub 3 -MeC sub 2 NMe sub 2 )(. mu. -MeC sub 2 NMe sub 2 )(. mu. sub 3 -S)
Journal Article · Sun Dec 31 23:00:00 EST 1989 · Organometallics; (USA) · OSTI ID:6654526
Synthesis and characterization of volatile sodium yttrium fluoroalkoxides. Structure of Na{sub 3}Y(OCH(CF{sub 3}){sub 2}){sub 6}(THF){sub 3} and Na{sub 2}Y(OCMe(CF{sub 3}){sub 2}){sub 5}(THF){sub 3}
Journal Article · Wed Jul 19 00:00:00 EDT 1995 · Inorganic Chemistry · OSTI ID:482363
Synthesis of volatile uranium compounds. [U(CF/sub 3/)/sub 6/; W(CF/sub 3/)/sub 6/]
Technical Report · Fri Dec 31 23:00:00 EST 1976 · OSTI ID:7215630

Related Subjects

40 CHEMISTRY
ADDUCTS
BOND ANGLE
BOND LENGTHS
CARBON MONOXIDE
CHEMICAL BONDS
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
EXPERIMENTAL DATA
MOLECULAR STRUCTURE
NMR SPECTRA
NUMERICAL DATA
ORGANOMETALLIC COMPOUNDS
STRUCTURAL CHEMICAL ANALYSIS
TUNGSTEN COMPLEXES
TUNGSTEN COMPOUNDS
X-RAY DIFFRACTION