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Octahedral SeO 6 6− and Square‐Pyramidal SeO 5 4− , Two New Oxoselenate Anions
Author(s) -
Haas Helmut,
Jansen Martin
Publication year - 2000
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 - 10.1002/1521-3773(20001201)39:23<4362::aid-anie4362>3.0.co;2-s
Subject(s) - octahedron , square pyramidal molecular geometry , polyhedron , tetrahedron , trigonal bipyramidal molecular geometry , ion , crystallography , square (algebra) , chemistry , materials science , mathematics , combinatorics , crystal structure , geometry , organic chemistry
High‐pressure techniques were applied to obtain the new oxoselenate Na 4 SeO 5 , whereas a further oxoselenate, Na 6 Se 2 O 9 , is also accessible under standard pressure. Both enrich the known oxoselenate( VI ) ions SeO 4 2− (tetrahedron) and SeO 5 4− (trigonal bipyramid) by two additional anionic polyhedra, namely by a square‐pyramidal pentaoxoselenate and by octahedral SeO 6 6− ions (see picture).