一种单核联吡啶铜(Ⅰ)配合物的合成、结构及性质

Synthesis,structure and properties of a new mononuclear bipyridyl copper(Ⅰ)complex

以6–(4–甲基磷酸二乙酯苯基)–2,2'–二联吡啶(L)与[Cu(CH3CN)4]BF4反应,得到了一种单核铜(Ⅰ)配合物[CuL2]BF4(1)。晶体结构表明,化合物1中二个配体提供四个N原子与Cu(Ⅰ)配位,中心金属离子Cu(Ⅰ)呈扭曲四面体构型。该配合物在426nm与527nm(sh)的低能吸收可归属为MLCT跃迁。电化学研究表明1具有大的Cu(Ⅱ)/Cu(Ⅰ)氧化还原电位(E1/2=0.49V,相对比饱和甘汞电极),表明1有很好的抗氧化能力。

A new mononuclear copper（I）complex,[CuL2]BF4（1）,where L is 6–（4–diethylmethylphosphonatephenyl）-2,2＇-bipyridine,was synthesized and characterized.The X-ray crystal indicated that the copper（I）center coordinated with four N atoms from two ligands,and adopted a distorted tetrahedron geometry.1showed low-lying absorption spectra,locating at 426and 527nm（sh）,and was assigned to metal to ligand charge-transfer transition（MLCT）.In addition,1displayed high Cu（II）/Cu（I）potential with E1/2=0.49V（vs SCE）as well.