Synthesis and structure of N-(O,O-diethylphosphoryl)-N′-benzoylurea samarium perchlorate complex
摘要:
The complex SM[(C2H5O)2P(O)NHC(O)NHC(O)C6H5]3(ClO4)3-3H2O was formed by the reaction of samarium perchlorate with N-(O,O-diethylphosphoryl)-N'-benzoylurea in ethylacetate and its X-ray crystal structure determined. The samarium atom is nine-coordinated by three phosphoryl oxygen atoms, three carbonyl oxygen atoms and three oxygen atoms from the water molecules, forming a distorted tricapped trigonal prism. Several important bond distances include Sm-O(1)(H2O) 2.471(6) angstrom, Sm-o(2)(H2O) 2.448(5) angstrom, Sm-0(3)(H2O) 2.442(5) angstrom, Sm-0(4)(phosphoryl) 2.394(4) angstrom, Sm-O(5) (carbonyl) 2.532(4) angstrom, Sm-O(6)(phosphoryl) 2.398(5) angstrom, Sm-0(7)(carbonyl) 2.543(4) angstrom, Sm-0(8)(phosphoryl) 2.398(5) angstrom and Sm-0(9)(carbonyl) 2.528(4) angstrom.