1395880-19-9Relevant articles and documents
Synthesis and crystal structures of the dioxovanadium complexes [VO 2L1] and [VO2L2]2
Liu,Ma
, p. 409 - 415 (2012)
Two new oxovanadium complexes, [VO2L1] (I) and [VO2L2]2 (II), where L1 and L 2 are the deprotonated forms of 4-bromo-2-[(2-diethylaminoethylimino) methyl]phenol (HL1) and 4-bromo-2-{[2-(2-hydroxyethylamino) ethylimino]methyl}phenol (HL2), respectively, have been synthesized and characterized by IR spectra and single crystal X-ray diffraction. The crystal of I is monoclinic: space group P21/n, a = 14.300(3), b = 7.010(2), c = 15.460(2) A, β = 107.401(2)°, V = 1478.7(5) A3, Z = 4. The crystal of II is monoclinic: space group P2 1/c, a = 7.270(2), b = 15.373(3), c = 11.893(3) A, β = 99.302(2)°, V = 1311.8(5) A3, Z = 2. Complex I is a mononuclear dioxovanadium(IV) complex. Complex II is a centrosymmetric dinuclear dioxovanadium(V) complex with a V·V distance of 3.117(2) A. The V atom in I is in a distorted square-pyramidal coordination, and that in II is in an octahedral coordination. The difference in the structures of the complexes is largely induced by the hydrogen bonds during the selfassembly process. Pleiades Publishing, Ltd., 2012.