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The Crystal Structure of [La(NO 3 ) 6 {Cu(2,2′‐bipy) 2 } 2 ][La(NO 3 ) 6 Cu(2,2′‐bipy) 2 ]CH 3 CN with the Most Profuse Modes of Nitrate Coordination
Author(s) -
Jianmin L.,
Huaqianga Z.,
Yugen Z.,
Jinhua C.,
Yanxiong K.,
Quanming W.,
Xintao W.
Publication year - 1999
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/(sici)1521-4079(199908)34:7<925::aid-crat925>3.0.co;2-s
Subject(s) - monoclinic crystal system , chemistry , crystal structure , coordination complex , crystal (programming language) , crystallography , molecule , nitrate , ion , coordination number , stereochemistry , metal , organic chemistry , programming language , computer science
The title compound [La(NO 3 ) 6 {Cu(2,2′‐bipy) 2 } 2 ][La(NO 3 ) 6 Cu(2,2′‐bipy) 2 ] CH 3 CN was synthesized, the crystal and molecular structures were determined at room temperature. The complex formed monoclinic crystals, space group P21/n (No.14), a = 10.354 (3) A, b = 23.440 (9) A, c = 32.817 (9) A, b = 90.39 (2)°, Z = 4. The crystal structure consisted of a discrete [La(NO 3 ) 6 {Cu(2,2′‐bipy) 2 } 2 ] + cation and [La(NO 3 ) 6 Cu(2,2′‐bipy) 2 ] ‐ anion and a non‐coordinated CH 3 CN molecule. Each La(III) ion was 12‐coordinate with twelve oxygen atoms from six chelating nitrate ligands. There were four modes of nitrate coordination and the coordination geometry of all three copper ions was different in the crystal structure.