Abstract
The ruthenium(II) complex, [RuCl2(NO)L] (I), (L=[(2-py)2PC2H4PO2(2-py)]-) was obtained from recrystallization of RuCl3NO(d2pype) (d2pype=(2-py)2PC2H4P(2-py)2) in the presence of HNO3, crystallizing in the monoclinic space group P21 (no. 4), with a =8.012(4) Ŭ b=14.454(4) Ŭ c=9.353(3) Ŭ ߽105.77(3)ଠand Z=2. Crystals of the DMSO solvate of the complex (II) were obtained from (CD3)2SO solution, crystallizing in the monoclinic space group P21/c (no.14) with a =9.7080(2) Ŭ b=22.2920(5) Ŭ c=11.5230(3) Ŭ ߽92.0450(10)ଠand Z=4. In both complexes, the geometry about the ruthenium atom is a distorted octahedron mainly as a result of the tridentate [P,N,O]-bonding mode of L. The ? (NO) bands at 1875 cm-1 in both complexes are consistent with the linear disposition of the NO group and the Ru atom as is observed in the X-ray crystal structure (Ru-N1-O1 angle=178.5(4)੮
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