Synthesis,crystal structure,and absorption spectra of neptunium(V) di(acetamido)nitrate (NpO_2)(NO_3)(CH-3CONH_2)_2

摘要

The crystal structure of 9NpO_2(NO_3)(CH_3CONH_2)_2 was determined.The crystallographic data were are follows:a=5.766(3) A,b=13.154(5)A,c=14.027(6)A,V=1064.0(8) A~3,space group Pnma,Z=4,rho_(clacd0=2.804 g/cm~3,R=0.146,R_w=0.102.The coordination polyhedron of Np is a pentagonal bipyramid whose equatorial positions are occupied by the oxygen atoms of the neighboring NpO_2,acetamide molecules,and of the nitrate ion.The IR and electronic abosrption spectra of the compound were measured.