Abstract

Nicotinoylhydrazone 5-nitrosalicylic aldehyde (H₂L) and solvate complex МоО₂(L)⋅Me₂SO (I) have been synthesized and their structures have been studied by IR spectroscopy and X-ray diffraction. According to X-ray diffraction data, the molybdenum atom in I has an octahedral coordination built of two cis-O₂(oxo) ligands, N(L),O(Solv) atoms in trans-positions to O(oxo) and two O(L) atoms in cis-positions to O(oxo) and in trans-positions to each other. The Mo atom coordinates ligand L^2– in the tridentate (2O, N) bis-chelate manner. Average bond lengths in I are: Mo–O(oxo) 1.690 Å, Mo–N(L) 2.249 Å, Mo–O(L) 1.965 Å, Mo–O(Me2SO) 2.260 Å, the O(oxo)MoO(oxo) bond angle is 105.1°. Changes in the geometric parameters of ligand L^2– when passing from H₂L and coordination by the Mo atom in complex I are considered. Adduct МоО₂Сl₂⋅2H₂L (II) has been obtained, and its structure is discussed based on IR spectroscopy data.

中文翻译：

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二氧钼 (VI) 与酰基腙的配合物。烟酰腙 5-亚硝基水杨醛 (H2L) 和溶剂合物 МоО2(L)·Me2SO 的晶体结构

摘要

合成了烟酰腙5-硝基水杨醛(H ₂ L) 和溶剂合物МоО ₂ (L)·Me ₂ SO ( I )，并通过红外光谱和X射线衍射研究了它们的结构。根据 X 射线衍射数据，I中的钼原子具有由两个顺式-O ₂ (oxo) 配体组成的八面体配位体，N(L),O(Solv) 原子在O(oxo) 的反位上和两个O(L) 原子在O(oxo)的顺式位置和彼此的反位置。Mo原子以三齿(2O，N)双螯合物方式配位配体L ^{2- 。}平均键长I是：Mo-O(oxo) 1.690 Å，Mo-N(L) 2.249 Å，Mo-O(L) 1.965 Å，Mo-O(Me2SO) 2.260 Å，O(oxo)MoO(oxo) 键角为 105.1°。^{考虑了配体 L 2-}从 H ₂ L 通过时的几何参数变化和配合物I中 Mo 原子的配位。得到了加合物МоО ₂ Сl ₂ ⋅2H ₂ L ( II )，并根据红外光谱数据对其结构进行了讨论。