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Metal‐Rich Phosphide Lu 3 Ir 7 P 5 – Flux Growth and Crystal Chemistry
Author(s) -
Pfannenschmidt Ulrike,
Rodewald Ute Ch.,
Pöttgen Rainer
Publication year - 2010
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.200900331
Subject(s) - phosphide , iridium , crystallography , lutetium , metal , crystal structure , phosphorus , chemistry , trigonal crystal system , bismuth , yttrium , oxide , biochemistry , organic chemistry , catalysis
The metal rich phosphide Lu 3 Ir 7 P 5 was synthesized from the elements in a bismuth flux (1:2:2:60 molar ratio, 1370 K, slow cooling rate). Lu 3 Ir 7 P 5 crystallizes with a new structure type which was characterized by powder and single‐crystal X‐ray diffraction: Cmcm , a = 390.30(8), b = 3238.3(6), c = 1515.4(3) pm, wR 2 = 0.0634, 1642 F 2 values and 101 variables. The iridium and phosphorus atoms build up a complex three‐dimensional [Ir 7 P 5 ] δ – polyanionic network, in which the lutetium atoms fill slightly distorted hexagonal prisms. The nine crystallographically independent iridium atoms have between three and five phosphorus neighbors in trigonal or square planar, tetrahedral, and square pyramidal coordination. All phosphorus atoms are isolated with coordination number 9 in the form of tricapped trigonal prisms. Lu 3 Ir 7 P 5 belongs to the large family of metal rich phosphides with a metal:phosphorus ratio of 2:1.