Institute of Chemistry,Far East Division,Russian Academy of Sciences,pr.'Stoletiya Vladivostoka 109,Vladivostok,690022 Russia

摘要

Neptunium(V)perrhenate complex[(NpO_2(ReO_4)(Phen)(H_2O)_2) was synthesized with 1,10-phenanthroline as a ligand.Its composition and structure were determined byx-ray diffraction analysis.The coordination polyhedron of the Np atom is a pentagonal bipyramid.The nearest surrounding of the neptunoyl ion includes the oxygen atom of the ReO_4 anion,two nitrogen atoms of phenanthroline,and the oxygen atoms of two water molecules.The crystals of the compound are monoclinic.The main crystallographic parameters are the following:space group P2_1/c,unit cell parameters a=7.288(1)A,b=10.513(2)A,c=20.936(4)A,P=96.939(5)°,Z=4,V=1592.2(5)A~3.Absorption spectra of the compound in visible and IR regions are reported.