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Stereochemistry of Polynuclear Cadmium(II)thioglycolates: Crystal Structure of [ICd 8 (SCH 2 CH 2 OH) 12 ] 3+ · 3I − · H 2 O
Author(s) -
Beat Bürgi Hans,
Gehrer Hermann,
Strickler Peter,
Winkler Fritz Karl
Publication year - 1976
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19760590732
Subject(s) - chemistry , triclinic crystal system , crystallography , crystal structure , cube (algebra) , ion , cadmium , iodide , stereochemistry , inorganic chemistry , combinatorics , mathematics , organic chemistry
Crystals of the title compound are triclinic, a = 27.87 Å, b = 10.77 Å, c = 12.94 Å, α 73.1°, β 116.1°, γ 120.0°, space group P 1 . The structure consists of octanuclear ions: Eight Cd(II) ions are found at the corners of a distorted cube, the center of the cube is occupied by an iodide, the twelve thioglycolate sulfur atoms bridge the twelve edges of the cube thereby forming a distorted icosahedron. Cadmium ions are either five or seven coordinate. The phase problem for this structure was solved using a combination of very high and very low E ‐values.