Abstract
Two new 8-hydroxyquinoline coordinated vanadium(V) complexes, [VO(L1)(L′)] (I) and [VO(L2)(L′)] (II), where L1 is the dianionic form of 2-[(2-hydroxyethylimino)methyl]-6-methylphenol (H2L1), L2 is the dianionic form of N′-(4-oxopentan-2-ylidene)pivalohydrazide (H2L2), L′ is the monoanionic form of 8-hydroxyquinoline (HL′), were prepared and characterized by elemental analysis, infrared, UV-Vis and 1H NMR spectra, and single crystal X-ray diffraction (CIF files CCDC nos. 1012078 (I) and 1012077 (II)). Complex I crystallizes in the monoclinic space group P21/n with unit cell dimensions a = 16.120(1), b = 6.9952(5), c = 16.128(1) A, β = 106.948(2)°, V = 1739.6(2) A3, Z = 4, GOOF = 1.127, R1 = 0.0464 and wR2 = 0.1172. Complex II crystallizes in the orthorhombic space group Pna21 with unit cell dimensions a = 13.512(2), b = 9.606(1), c = 31.081(4) A, V = 4034.3(8) A3, Z = 8, GOOF = 1.044, R1 = 0.0604 and wR2 = 0.1038. The V atoms in the complexes are in octahedral coordination. Thermal stability of the complexes was studied.
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