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Synthesis and Crystal Structure of Alkali Metal and Ammonium Nitratocuprates(II): M 3 [Cu(NO 3 ) 4 ](NO 3 ) (M = K, NH 4 , Rb) and Cs 2 [Cu(NO 3 ) 4 ]
Author(s) -
Morozov I. V.,
Fedorova A. A.,
Troyanov S. I.
Publication year - 1998
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/(sici)1521-3749(199809)624:9<1543::aid-zaac1543>3.0.co;2-5
Subject(s) - chemistry , alkali metal , denticity , crystal structure , crystallography , rubidium , metal , copper , ammonium , ligand (biochemistry) , transition metal , derivative (finance) , inorganic chemistry , potassium , catalysis , biochemistry , receptor , organic chemistry , financial economics , economics
Blue crystals of metal nitratocuprates(II), M 3 [Cu(NO 3 ) 4 ](NO 3 ) (M = K ( I ), NH 4 ( II ), Rb ( III )) and Cs 2 [Cu(NO 3 ) 4 ] ( IV ) were synthesized from Cu(NO 3 ) 2 · 3 H 2 O and MNO 3 by heating at 100–140 °C during 3–12 h. X‐ray single crystal structures for isotypic I and II reveal the presence of the [Cu(NO 3 ) 4 ] 2– and NO 3 – anions and M + cations. Structure IV contains [Cu(NO 3 ) 4 ] 2– and Cs + . In structures I , II , and IV , Cu atoms have a square‐planar coordination [CuO 4 ] with short Cu–O distances of 1.92–2.00 Å, the oxygen atoms belonging to four different NO 3 groups. Each coordinated NO 3 group is a nonsymmetrical bidentate ligand with the second, longer Cu–O distance from 2.38 to 2.74 Å. Rubidium derivative III was shown to be isotypic to I on the basis of unit cell dimensions and symmetry. Eight‐coordinate metal(II) environment in tetranitrates is compared for transition metals with different electronic configurations.