邻硝基苯基氮氧自由基及其Cu(Ⅱ)配合物的合成和晶体结构

Syntheses and crystal structures of o-nitrophenyl nitronyl nitroxide radical and its Cu(Ⅱ) complex

由邻硝基苯甲醛、2,3-二甲基-2,3-二硝基丁烷和六氟乙酰丙酮铜等合成了2-(2′-硝基苯基)-4,4,5,5-四甲基咪唑啉-3-氧化-1-氧基自由基(NIT-oNO2)(1)及其Cu(Ⅱ)配合物[Cu(NIT-oNO2)(hfac)2](2),对其进行了元素分析、红外光谱和X射线单晶衍射测定.结构分析表明:配体(1)通过分子间氢键作用形成了一维的链状结构;通过Cu(Ⅱ)离子与自由基的NO基团形成的弱配位键,配合物(2)也形成了一维的链状结构.

NIT-oNO2 = 2-（ 2＇-nitrophenyl）-4, 4, 5, 5-tetramethylimidazoline-1-oxyl-3-oxide （ 1 ） and its Cu （ Ⅱ ） complex [ Cu（NIT-oNO2） （ hfae）2 ] ] （2） have been synthesized using o-nitrobenzaldehyde, 2,3-dimethyl-2,3-dinitmbutane and Cu（hfae）2. The ligand and its Cu（ Ⅱ） complex were characterized by elemental analysis, IR spectra, and single crystal X ray diffraction. The ligand 1 forms a 1-D chain structure by intermoleeular H-bend interaction. Through weak coordination bonds between Cu（Ⅱ） and NO group, a 1-D chain is formed in the complex.