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合成了一种新的钒(Ⅳ)与吡啶-2,6_二羧酸和异烟酰肼混配体配合物,[VO(INTH)(dipic)].EtOH,并测定其晶体结构.该晶体属单斜晶系,C2/c群.晶胞参数为:a=2.942 1(4)nm,b=0.809 09(10)nm,c=1.497 87(19)nm,β=107.037(2)°,V=3.409 1(7)nm3,Z=8,F(000)=1 1 696,Mr=414.25,Dc=1.614 g/cm3,μ(Mo kα)=0.631 mm-1,Rl=0.039 7,wR2=0.115 2.三齿配体(吡啶-2,6-二羧酸)和二齿配体(异烟酰肼)分别以ONO和ON的模式与中心酰钒离子配位,形成[VO(ONO)(ON)]结构,并呈变形八面体构型.分子间形成O—H…O和N—H…O氢键,构成两维网状结构.
A new complex of vanadium (Ⅳ) with pyridine-2,6-dicarboxylic acid and isonicotinic acid hydrazide [VO (INTH) (dipic)]. EtOH was synthesized and its crystal structure was determined. The crystal is monoclinic with C2 / c group.The unit cell parameters are: a = 2.942 1 (4) nm, b = 0.809 09 (10) nm, c = 1.497 87 (19) nm, β = 107.037 = 3.409 1 (7) nm3, Z = 8, F (000) = 1 1 696, Mr = 414.25, Dc = 1.614 g / cm3, Mo (Mo kα) = 0.631 mm-1, , wR2 = 0.115 2. Tridentate ligands (pyridine-2,6-dicarboxylic acid) and bidentate ligands (isonicotinylhydrazide) coordinate to the central acyl vanadium ions in the ONO and ON modes, respectively, to form [VO (ONO) (ON)] structure with a distorted octahedron structure, forming O-H ... O and N-H ... O hydrogen bonds between molecules to form a two-dimensional network structure.