R. Felsberg et al., ORGANOMETALLIC MOLYBDENUM(V) COMPLEXES WITH PRIMARY PHOSPHANE LIGANDSSYNTHESES, SPECTROSCOPIC PROPERTIES, AND CRYSTAL-STRUCTURES OF [CP'MOCL4(PH2R)] (R=2,4,6-(PR3C6H2)-C-I, CYCLOHEXYL, CP'=C5H4ME), Chemische Berichte, 130(6), 1997, pp. 807-812
[Cp'MoCl4(CH3CN)] (Cp' = C5H4Me) reacts with 2,4,6-triisopropylphenylp
hosphane or cyclohexylphosphane to give the phosphane complexes [Cp'Mo
Cl4(PH2R)] [R = 2,4,6-(Pr3C6H2)-C-i (1), Cy (2)]. 1 and 2 were charact
erized spectroscopically (IR, MS) and by crystal structure determinati
ons. EPR investigations in Liquid and frozen solution confirmed the pr
esence of Mo(V) species and the data were used to analyze the spin-den
sity distribution in the first coordination sphere.