SYNTHESIS AND PROPERTIES OF CHIRAL RHENIUM ETHER COMPLEXES OF THE FORMULA [(ETA-5-C5H5)RE(NO)(PPH3)(OR2)]+X- Academic Article uri icon

abstract

  • Reaction of the dichloromethane complex [(5C5H5)Re(NO)(PPh3)(ClCH2Cl)]+BF4(2+BF4; in CH2C12) and tetrahydrofuran gives [5C5H5)Re(NO)(PPh3)(THF)]+BF4(5+BF4; 91% after workup). Reaction of 2+BF4and methyl ether gives [tf-C5H5)Re(NO)(PPh3)(OMe2)]+BF4(4+BF4, characterized in situ). Ethyl ether and 2+BF4react to give [(5C5H5)Re-(NO)(PPh3)(OEt2)]+BF4(3+BF4), but not under preparatively useful conditions. Reaction of the hydride complex (5C5H5)Re(NO)(PPh3)(H) (6), Ph3C+PF6, and tetrahydrofuran gives 5+PF6(90%). Reaction of 6, Ph3C+PF6, and ethyl ether gives 3+PF6(93%). Reactions of alkoxide complexes (5C5H5)Re(NO)(PPh3)(OR) and oxonium salts R3O+X(R = Et, Me) in CH2C12give ethers R2O and ether complexes 3+X/4+Xin quantitative NMR yields. These and other data show that tetrahydrofuran, methyl ether, and ethyl ether have higher thermodynamic binding affinities than dichloromethane for the metal fragment [(5C5H5)Re(NO)(PPh3)]+and that the oxygen lone-pair basicity in (5C5H5)Re(NO)(PPh3)(OR) is greater than that in R2O. 1990, American Chemical Society. All rights reserved.

published proceedings

  • INORGANIC CHEMISTRY

author list (cited authors)

  • AGBOSSOU, S. K., FERNANDEZ, J. M., & GLADYSZ, J. A.

citation count

  • 19

complete list of authors

  • AGBOSSOU, SK||FERNANDEZ, JM||GLADYSZ, JA

publication date

  • February 1990