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A new dicopper(II) compound with oxalate and reduced imino nitroxide radicals [Cu2(m-C2O4)(Him2-py)2(H2O)2](NO3)2 (Him2-py=1-hydroxy-2-(2-pyridyl)-4,4,5,5-tetramethyli- midazoline) has been synthesized and its crystal structure was determined by X-ray diffraction method. The complex crystallizes in monoclinic, space group P21/n with a = 9.913(4), b = 19.057(8), c = 10.169(4) ? b = 114.292(7), V = 1751(1) 3, C26H38Cu2N8O14, Mr = 813.72, Dc = 1.543 g/cm3, m(MoKa) = 1.290 mm-1, F(000) = 840, Z = 2, the final R = 0.0398 and wR = 0.0986 for 1878 observed reflections (I>2s(I)). The imino nitroxide 2-(2-pyridyl)-4,4,5,5-tetramethyl- imidazoline-1-oxyl (im2-py) is reduced in the reaction to yield Him2-py which consists of oxalato-bridged centrosymmetric [Cu2(m-C2O4)(Him2-py)2(H2O)2]2+ ions and noncoordinated NO3- anions. Each copper(II) ion is in a distorted tetragonal pyramid environment: two nitrogen atoms from Him2-py and two oxygen atoms from the oxalate group are in the basal plane, and one water molecule at the axial position.
A new dicopper (II) compound with oxalate and reduced imino nitroxide radicals [Cu2 (m-C2O4) (Him2-py) 2 (H2O) 2] pyridyl) -4,4,5,5-tetramethyl- midazoline) has been synthesized and its crystal structure was determined by X-ray diffraction method. The complex crystallizes in monoclinic space group P21 / n with a = 9.913 (4), b = 19.057 (8) c = 10.169 (4)? b = 114.292 (7) V = 1751 (1) 3 C26H38Cu2N8O14 Mr = 813.72 Dc = 1.543 g / cm3 MoKa = 1.290 mm- 1, F (000) = 840, Z = 2, the final R = 0.0398 and wR = 0.0986 for 1878 observed reflections (I> 2s (I)). The imino nitroxide 2- (2-pyridyl) Pyrimidine 5-tetramethyl-imidazoline-1-oxyl (im2-py) is reduced in the reaction to yield Him2-py which consists of oxalato-bridged centrosymmetric [Cu2 (m-C2O4) ] 2+ ions and noncoordinated NO3- anions. Each copper (II) ion is in a distorted tetragonal pyramid environment: two nitrogen atoms from Him2-py and two oxygen atoms from the oxalate group are in the basal plane, and one water molecule at the axial position.