A covalent vanadium(III) 2-dimensional network and vanadyl chains linked by aryldioxides

Thermolysis of ((PrO)-Pr-i)(4)V and 2,6-dihydroxynaphthalene in 4-(3-phenylpropyl)pyridine afforded [mer-V(mu (2.6)-OC10H6O)(1.5)(4-(3-phenylpropyl)py)(3)](n) (1; C57H54N3O3V, triclinic, P (1) over bar, a = 10.450(2) A, b = 14.098(3) Angstrom, c = 16.765(3) Angstrom, alpha = 100.09(3)degrees, beta = 103.85(3)degrees, gamma =103.08(3)degrees, Z = 2) and oxidation product bis-2,6-dinaphthol. Paramagnetic (S = 1) 1 adopts a bricklike motif of aryldioxide-connected V(III) centers whose channels are filled with the bound 4-(3-phenylpropyl)py. A similar procedure involving ((PrO)-Pr-i)(3)VO provided the linear chain [(mu (2.6)-OC10H6O)(4-(3-phenylpropyl)py)(2)VO](n) (2; C38H36N2O3V, monoclinic, P2(1)/c, a = 10.6172(2) Angstrom, b = 9.4477(3) Angstrom, c = 31.8129(8) Angstrom, beta = 95.20(3)degrees, Z = 4). Interchain pyridine ring-edge to phenyl-face interactions generate a sheet of like-oriented ores, but adjacent sheets are oriented in opposition so that no net dipole exists. Another 1-dimensional chain, [(mu (1.4)-OC6H4O)(py)(2)VO](n) (3; C16H14N2O3V, monoclinic, P2(1)/c, a = 8377(2) Angstrom, b = 16.675(3) Angstrom, c = 11.061(2) Angstrom, beta = 103.91(3)degrees, Z = 4), was prepared by heating ((PrO)-Pr-i)(4)V and hydroquinone in pyridine. Pyridines of adjacent chains interpenetrate to form a sheet, but ores in adjacent chains are now in opposition.