Rhenium complexes with weakly coordinating solvent ligands, cis[Re(PR{sub 3})(CO){sub 4}(L)][BAr{sub F}], L = CH{sub 2}Cl{sub 2}, Et{sub 2}O, NC{sub 5}F{sub 5}: Decomposition to chloride-bridged dimers in CH{sub 2}Cl{sub 2} solution
- Los Alamos National Lab., NM (United States). Chemical Science and Technology Div.
The solvent-coordinated complexes [cis-Re(CO){sub 4}(PR{sub 3})(S)][BAr{sub F}] (R = Ph, {sup i}Pr, Cy, BAr{sub F} = [B(3,5-(CF{sub 3}){sub 2}C{sub 6}H{sub 3}){sub 4}]{sup {minus}}) for S = Et{sub 2}O, CH{sub 2}Cl{sub 2}, and NC{sub 5}F{sub 5} have been prepared from reaction of the neutral methyl precursors, cis-Re-(CO){sub 4}(PR{sub 3})(Me), with either [H(OEt{sub 2}){sub 2}][BAr{sub F}] or [Ph{sub 3}C][BAr{sub F}] in the appropriate solvent. A crystal structure of the complex [cis-Re(CO){sub 4}(P{sup i}Pr{sub 3})(ClCH{sub 2}Cl)][BAr{sub F}] shows that the dichloromethane ligand is coordinated through one chlorine, with an Re-Cl distance of 2.554(2) {angstrom}. The first example of a structurally characterized pentafluoropyridine complex of rhenium was also determined, [cis-Re(CO){sub 4}(P{sup i}Pr{sub 3})(NC{sub 5}F{sub 5})][BAr{sub F}], with an Re-N distance of 2.319(5) {angstrom}. Activation of C-Cl bonds in the dichloromethane complexes result in the formation of the chloride-bridged dimers, {l_brace}[cis-Re(CO){sub 4}(PR{sub 3})]{sub 2}({mu}-Cl){r_brace}{l_brace}BAr{sub f}{r_brace}, and the X-ray structures of the Ph and Cy derivatives were determined.
- OSTI ID:
- 316229
- Journal Information:
- Inorganic Chemistry, Vol. 38, Issue 1; Other Information: PBD: 11 Jan 1999
- Country of Publication:
- United States
- Language:
- English
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