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Dimeric Oxidovanadium(IV) Complex Bearing 1,10-Phenanthroline
Crystallography Reports ( IF 0.7 ) Pub Date : 2020-11-25 , DOI: 10.1134/s1063774520070056
I. Charamzová , J. Honzíček , P. Kalenda , J. Vinklárek , I. Císařová

Abstract

New crystals of di-µ-methoxido-bis[(2-ethylhexanoato-κO)oxido(1,10-phenanthroline-κ2N,N')vanadium(IV)], C42H52N4O8V2, have been synthesized, characterized by elemental analysis, infrared spectroscopy, electron paramagnetic resonance and X-ray diffraction analysis. The compound crystallizes in the monoclinic space group P21/c: a = 13.0656(11) Å, b = 9.1474(8) Å, c = 17.0299(14) Å, β = 94.387(4)°, Z = 2, Rgt = 0.0617, wR(F2) = 0.169, T = 150(2) K. The dimeric oxidovanadium(IV) complex consists of two [VIVO(OCOC7H15)(phen)] units connected with two methanolate bridges. The vanadium atoms have a distorted octahedral environment with four oxygen and two nitrogen atoms. The V=O bond length is 1.601(3) Å; the V–O bond lengths in the symmetrical V2O2 core are 1.973(2) and 2.007(3) Å. The vanadium–oxygen bond lengths in the carboxylate are 1.974(3) Å. The V–N interatomic distances depend on the configuration towards the oxidoligand. Preliminary experiments on solvent-borne alkyd resins revealed promising catalytic activity in the auto-oxidation process.



中文翻译:

1,10-邻菲咯啉的二聚氧化钒(IV)配合物

摘要

二μ-methoxido双新晶体[(2-乙基己酸-κ ø)氧(1,10-菲咯啉-κ 2 N,N- “)钒(IV)],C 42 H ^ 52 Ñ 4 ø 8 V 2通过元素分析,红外光谱,电子顺磁共振和X射线衍射分析,已合成了,。该化合物在单斜空间群P 2 1 / c中结晶:a = 13.0656(11)Å,b = 9.1474(8)Å,c = 17.0299(14)Å,β= 94.387(4)°,Z  = 2,R gt = 0.0617,wRF 2)= 0.169,T = 150(2)K。二聚体氧化钒(IV)络合物由两个[V IV O(OCOC 7 H 15)(phen)]单元与两个甲醇桥连接。钒原子具有扭曲的八面体环境,具有四个氧和两个氮原子。V = O键长为1.601(3)Å; 对称V 2 O 2中的V–O键长度核心是1.973(2)和2.007(3)Å。羧酸盐中的钒-氧键长度为1.974(3)Å。V–N原子间的距离取决于朝向氧化配体的构型。溶剂型醇酸树脂的初步实验表明,在自动氧化过程中,催化活性很有希望。

更新日期:2020-11-25
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