N-水杨酰肼作为二氧钒（V）配合物的多功能三齿配体。

N-Salicylidenehydrazides as versatile tridentate ligands for dioxovanadium(V) complexes.

作者信息

Plass W, Pohlmann A, Yozgatli H P

机构信息

Fakultät für Chemie der Universität Bielefeld, Germany.

出版信息

J Inorg Biochem. 2000 May 30;80(1-2):181-3. doi: 10.1016/s0162-0134(00)00029-5.

DOI:10.1016/s0162-0134(00)00029-5

PMID:10885484

Abstract

The Schiff base ligand derived from salicylaldehyde and benzoic acid hydrazide (H2salhyph) reacts with potassium metavanadate in methanol solution to yield the potassium salt of the corresponding cis-dioxovanadium(V) complex K[VO2(salhyph)] (1). 1 crystallizes with one molecule of methanol in the monoclinic space group P2(1)/c with a = 1332.3(7), b = 669.9(2), c = 1809.0(8) pm, beta = 100.96(4) degrees, and Z = 4. The reactions of 1 with several proton acidic compounds including water, methanol, ethane-1,2-diol (H2ed), and proton acids lead to neutral monooxovanadium(V) and cis-dioxovanadium(V) complexes ([VO2(Hsalhyph)] (2); [V2O3(salhyph)2] (3); [VO(OMe)(salhyph)(HOMe)] (4); [VO(Hed)(salhyph)] (5)). The crystal structure of 2 (triclinic space group P1 with a = 677.79(5), b = 842.89(7), c = 1214.66(9) pm, alpha = 79.931(1), beta = 75.466(1), gamma = 73.391(1) degrees, and Z = 2) reveals that the protonation of the cis-dioxovanadium(V) complex 1 occurs at the hydrazide nitrogen atom of the ligand system. This was confirmed by the spectroscopic properties of the deuterium derivative.

摘要

由水杨醛和苯甲酸酰肼衍生得到的席夫碱配体（H2salhyph）在甲醇溶液中与偏钒酸钾反应，生成相应的顺式二氧钒（V）配合物的钾盐K[VO2(salhyph)]（1）。1与一个甲醇分子一起在单斜空间群P2(1)/c中结晶，a = 1332.3(7)，b = 669.9(2)，c = 1809.0(8) pm，β = 100.96(4)°，Z = 4。1与几种质子酸性化合物（包括水、甲醇、1,2 - 乙二醇（H2ed）和质子酸）的反应生成中性单氧钒（V）和顺式二氧钒（V）配合物（[VO2(Hsalhyph)]（2）；[V2O3(salhyph)2]（3）；[VO(OMe)(salhyph)(HOMe)]（4）；[VO(Hed)(salhyph)]（5））。2的晶体结构（三斜空间群P1，a = 677.79(5)，b = 842.89(7)，c = 1214.66(9) pm，α = 79.931(1)，β = 75.466(1)，γ = 73.391(1)°，Z = 2）表明顺式二氧钒（V）配合物1的质子化发生在配体体系的酰肼氮原子上。氘代衍生物的光谱性质证实了这一点。