Synthesis and structure of the amidate-bridged platinum-uranium bimetallic complex [Pt{NC(O)CH2CH2}2(PPh3)2]•UO2(NO3)2

The reaction of the beta-propiolactam-derived platinum(II) amidate complex [Pt{NC(O)CH2CH2}(2)(PPh3)(2)] with uranyl nitrate gives the coordination complex [Pt{NC(O)CH2CH2}(2)(PPh3)(2)]. UO2(NO3)(2), which was characterised by a single-crystal X-ray diffraction study. The lactam carbonyl groups are coordinated to the linear uranyl group, forming an eight-membered ring, with the uranium also having two bidentate nitrates, completing a hexagonal bipyramidal coordination geometry. The platinum and uranium coordination planes are almost perpendicular, at an angle of 85.4(1)degrees. (C) 2000 Elsevier Science S.A. All rights reserved.