Premium
Synthesis of the One‐dimensional Compound (Ph 4 P)[In(P 2 Se 6 )] in a Ph 4 P + ‐Containing Selenophosphate Flux, and Structure of [In(P 2 Se 6 ) 2 ] 5– – a Discrete Molecular Fragment of the [In(P 2 Se 6 )] n n– Chain
Author(s) -
Chondroudis Konstantinos,
Chakrabarty Debojit,
Axtell Enos A.,
Kanatzidis Mercouri G.
Publication year - 1998
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/(sici)1521-3749(199806)624:6<975::aid-zaac975>3.0.co;2-1
Subject(s) - chemistry , crystallography , tetragonal crystal system , monoclinic crystal system , crystal structure , stereochemistry
The reaction of one equivalent of In with a molten flux of (Ph 4 P) 2 Se 5 and P 2 Se 5 (1 : 2), at 250 °C gave the (Ph 4 P)[In(P 2 Se 6 )] ( I ). Stoichiometric elemental synthesis at 750 °C produced the Cs 5 In(P 2 Se 6 ) 2 ( II ). The thin, yellow crystals of ( I ), and the irregular, dark orange crystals of ( II ), appear to be air‐ and water‐stable. Compound ( I ) crystallizes in the monoclinic space group C2/c (no. 15) and at 23 °C: a = 23.127(7) Å, b = 6.564(1) Å, c = 19.083(3) Å, β = 97.42(2)°, V = 2873(1) Å 3 , Z = 4, final R/R w = 4.4/5.2%. Compound ( II ) crystallizes in the tetragonal space group P4 2 /m (no. 84) and at 23 °C: a = b = 13.886(1) Å, c = 7.597(2) Å, V = 1464.9(3) Å 3 , Z = 2, final R/R w = 3.9/5.1%. Compound ( I ) contains infinite [In(P 2 Se 6 )] n n– with a structure related to that of K 2 FeP 2 Se 6 . Compound ( II ) contains the discrete [In(P 2 Se 6 ) 2 ] 5– which can be viewed as a fragment of the [In(P 2 Se 6 )] n n– chain.