Synthesis and structure of bis(mu-2-aminopyridine N-oxide)-bis[dichlorocopper(II)]

The complex [Cu-2(apO)(4)Cl-4]. 2H(2)O (apo=2-aminopyridine N-oxide) was ob tained. A single- crystal X-ray study shows that the complex is a binuclear compound (Cu2C20H28Cl4N8O6). The coordination geometry about each copper a tom is best described as a distorted square pyramid. The compound [Cu-2(apo )(4)Cl-4]. 2H(2)O belongs to the triclinic system with space group P1, latt ice constants: a = 7.8550(7), b = 8.5378(7), c = 12.082(1) Angstrom, alpha = 72.807(l), beta = 77.641(1),gamma = 70.800(1)degrees, V=724.85(11) Angstr om (3), Z= 1, M-r =745.38, D-c= 1.708 g/cm(3), mu =1.886mm(-1), F(000) =378 , R=0.0359, wR(2)=0.0884 for 2220 reflections with I >2 sigma (I). The dist ances between Cu(II) and O atoms are in the range from 1.934(2) to 2.042(2) Angstrom. The distance between two copper atoms Cu-Cu(A) is 3.2978(8) Angst rom. The distances of Cu-Cl(1) and Cu-Cl(2) are 2.2322(9), 2.5095(10) Angst rom, respectively. There is no evident hydrogen bond between N and Cl.