TY - JOUR
T1 - Mehrfachbindungen zwischen hauptgruppenelementen und übergangsmetallen. XXXVI. Metallorganische oxide der vanadium-reihe
T2 - derivate der schlüsselverbindung (η5-C5H5)VOCl2
AU - Hermann, Wolfgang A.
AU - Weichselbaumer, Georg
AU - Kneuper, Heinz Josef
PY - 1987/1/13
Y1 - 1987/1/13
N2 - The synthesis of the organovanadium(V) oxide (η5-C5H5)VOCl2 (2a) from the low-valent precursor compound (η5-C5H5)V(CO)4 (1a) has been applied to the permethylated derivative of composition (η5-C5Me5VOCl2 (2b). Exchange of bromine for chlorine in oxodichlorides 2a and 2b is effected by boron tribromide, yielding the oxodibromide derivatives of composition (η5-C5R5)VOBr2 (R = H, 3a; R = CH3, 3b). The methoxy derivatives 4a and 4b are synthesized directly from the dichloro precursors 2a and 2b, respectively, by treatment with a slight excess of sodium methoxide. Diarylvanadium(V) compounds (η5-C5R)VOX2 (e.g., R = CH3, X = C6H5; 5b), are obtained from 2a,2b via the Grignard route. 51V NMR spectroscopy is an easy and powerful method of detecting novel organic vanadium oxides since the chemical shifts vary greatly even with small changes in the ligands attached to the metal.
AB - The synthesis of the organovanadium(V) oxide (η5-C5H5)VOCl2 (2a) from the low-valent precursor compound (η5-C5H5)V(CO)4 (1a) has been applied to the permethylated derivative of composition (η5-C5Me5VOCl2 (2b). Exchange of bromine for chlorine in oxodichlorides 2a and 2b is effected by boron tribromide, yielding the oxodibromide derivatives of composition (η5-C5R5)VOBr2 (R = H, 3a; R = CH3, 3b). The methoxy derivatives 4a and 4b are synthesized directly from the dichloro precursors 2a and 2b, respectively, by treatment with a slight excess of sodium methoxide. Diarylvanadium(V) compounds (η5-C5R)VOX2 (e.g., R = CH3, X = C6H5; 5b), are obtained from 2a,2b via the Grignard route. 51V NMR spectroscopy is an easy and powerful method of detecting novel organic vanadium oxides since the chemical shifts vary greatly even with small changes in the ligands attached to the metal.
UR - https://www.scopus.com/pages/publications/4043104811
U2 - 10.1016/0022-328X(87)83035-8
DO - 10.1016/0022-328X(87)83035-8
M3 - Artikel
AN - SCOPUS:4043104811
SN - 0022-328X
VL - 319
SP - C21-C24
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
IS - 2
ER -