ISSN:
1572-8854
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract Crystals of hydridodinitratobis(triphenylphosphine) iridium(III), IrH(NO3)2(PPh3)2, belong to the trigonal system, space groupP¯3e1, with hexagonal unit-cell dimensionsa = 16.33(1),c = 22.85(2) Å, andZ = 6. The six Ir atoms lie in special positions. Two (of molecule 1) have site symmetry 32 and four (of molecule 2) have site symmetry 3. Both types of molecule have trigonal bipyramidal coordination with phosphorus atoms axial but do not have sufficient nitrate groups (two instead of three) to satisfy the site symmetry. Thus both types of molecule have disordered nitrate groups and the mode of coordination appears to be somewhat different at the two sites.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01291006
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