[(q5-C5Me5)OS(q4-C8H12)H], 100603-30-3; [(q5-C5Me5)0S(CO),C1], 110097-00-2; [(a5-C5H4Me)Ru(q4-C8H12)C1], 110097-01-3; [(q5-C5H4Me)Ru(q4-
C8H12)Br], 110097-02-4; [(v~-(~H~M~)Ru(~~-C~H~~)I], 110097-03-5;3-chloroprop-l-ene, 107-05-1; 3-chlorobut-l-ene, 563-52-0; 1-chloro-2-methylprop-2-ene, 563-47-3; 3,4-dichlorobut-l-ene, 760-23-6; tram-3-chloro-l-phenylprop-l-ene, 21087-29-6; 2,3-dichloroprop-1-ene, 78-88-6; 3-bromoprop-l-ene, 106-95-6; 1,4-dibromobut-2-ene, 6974-12-5; 2,3-dibromoprop-l-ene, 513-31-5; 3-iodoprop-l-ene, 556-56-9; 3,4-dichlorocyclobutne, 41326-64-1; l-chloro-2-methylprop-l-ene, 513-37-1; 3-bromocyclohexene, 1521-51-3; cyclohexa-1,3-diene, 592-57- Paramagnetic high-spin d2 and d3 monocyclopentadienyl vanadium hydrocarbyl complexes CpV"'R2-
IntroductionThe organometallic chemistry of V(I1) and V(II1) has for a long time been centered around the metallocene derivatives Cp2V1r.L2a-c and Cp2Vrr'Rzd-g (Cp = q5-C5H5). In recent years two main approaches to monocyclopentadienyl complexes of vanadium have been developed elimination of CpK from K[Cp2VI3 and reaction of Cp2Mg with VC13.2PR3 to form C P V C~~( P R~)~,~ from which CpVCl(dmpe) (dmpe = 1,2-bis(dimethylphosphino)ethane) can be obtained by r e d~c t i o n .~ Here we wish to report(1) (a)