CONVERGENT SYNTHETIC ROUTES TO HETEROBIMETALLIC COMPOUNDS - CRYSTAL AND MOLECULAR-STRUCTURE OF 1-(ETA(5)-CYCLOPENTADIENYL MANGANESE TRICARBONYL)-1-(ETA(6)-PHENYL CHROMIUM TRICARBONYL) ETHANOL

13 heterobimetallic compounds have been prepared by a convergent synth etic strategy employing reactions of a lithiocyclopentadienyl or lithi oarene metal complex with formyl, acetyl or carbomethoxy functionalize d derivatives of a second metal. The resulting lithium alkoxide produc ts were converted to the corresponding alcohols by dilute acid work-up . Two methanol derivatives were successfully converted to their corres ponding methane derivatives by reaction with trifluoroacetic acid foll owed by reaction of the resultant carbocation with sodium tetrahydrobo rate. Reaction of a(6)-C6H5Cr(CO)(3)]-1-[eta(5)-C5H4Mn(CO)(3)]C2H3OH w ith trifluoroacetic acid results in dehydration to yield the correspon ding ethene derivative. The molecular structure of a(6)-C6H5Cr(CO)(3)] -1-[eta(5)-C5H4Mn(CO)(3)]C2H3OH was determined: monoclinic, P2(1)/c, a = 7.936(2), b = 19.844(8), c = 11.774(4)Angstrom, beta = 91.58(2)degr ees, V = 1853(1)Angstrom(3), Z = 4, R(F)= 4.52%.