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K 6 Pb 8 Cd: A Zintl Phase with Oligomers of Pb 4 Tetrahedra Interconnected by Cd Atoms
Author(s) -
Todorov Evgeny,
Sevov Slavi C.
Publication year - 1999
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19990614)38:12<1775::aid-anie1775>3.0.co;2-m
Subject(s) - disproportionation , tetrahedron , stoichiometry , crystallography , chemistry , zintl phase , phase (matter) , crystal structure , catalysis , biochemistry , organic chemistry
Unprecedented (Pb 4 )Cd(Pb 4 )Cd(Pb 4 )Cd(Pb 4 ) tetramers (see picture) are present in the structure of the title compound, in which they coexist with isolated Pb 4 tetrahedra. Since Cs 6 Ge 8 Zn has the same stoichiometry as K 6 Pb 8 Cd but contains exclusively (Ge 4 ) 2 Zn dimers, this can be viewed as a disproportionation reaction of the type (a).