Premium
The Synthesis and Crystal Structure of NpSe 3
Author(s) -
Bellott Brian J.,
Haire Richard G.,
Ibers James A.
Publication year - 2012
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201200214
Subject(s) - monoclinic crystal system , crystallography , neptunium , bond length , crystal structure , yield (engineering) , chemistry , selenium , crystal (programming language) , materials science , inorganic chemistry , actinide , computer science , programming language , metallurgy , organic chemistry
Abstract Neptunium triselenide, NpSe 3 , was synthesized in high yield by the reaction of the elements in a Sb 2 Se 3 flux at 1223 K. Its structure has been determined by single‐crystal X‐ray diffraction methods. Thecompound crystallizes with two formula units in space group C $\rm^{2}_{2h}$ –P 2 1 / m of the monoclinic system in the TiS 3 structure type with cell constants at 100 K of a = 5.592(3) Å, b = 4.002(2) Å, c = 9.422(5) Å, β = 97.40(1) °. The asymmetric unit comprises one neptunium and three selenium atoms, each with site symmetry m . Np–Se interatomic distances range from 2.859(2) to 2.927(3) Å; the Se–Se bond length of 2.340(3) Å is typical of a single bond. The compound may thus be charge‐balanced and formulated as Np 4+ Se 2– Se 2 2– .