Nitrogen and other Donor Atoms

Higginbotham and P. Hambright, Inorg. Nuclear Chem. Letters, 1972, 8, 747. 

Bankovis, M. Krasovska, L. Cera, J. Lejejs, and R. Lazdina, Latvijas PSR Zinatnu Akad. Vestis., Khim. Ser., 1971, 742. 

F-Donor Ligands. E.s.r. studies have shown that the family of [VOCl2(PR3)2] complexes (R = Me, Et, Pr, Bu, or Ph, or R3 = Ph Et) preferentially adopt a trigonal-bipyramidal rather than the square-pyramidal geometry usually typical of oxovanadium(iv) complexes. The adoption of this structure appears to be a consequence of the steric requirements of the phosphine ligands [cf. [VOCI,(Me3N)J.  

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