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Stabilization of Long Cationic EMACs by Reduction or Loss of One Metal Ion
Author(s) -
Ismayilov Rayyat H.,
Wang WenZhen,
Wang RuiRen,
Huang YiLin,
Yeh ChenYu,
Lee GeneHsiang,
Peng ShieMing
Publication year - 2008
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200800450
Subject(s) - chemistry , superexchange , delocalized electron , cationic polymerization , metal , valence (chemistry) , ligand (biochemistry) , ion , inductive coupling , chain (unit) , metal ions in aqueous solution , crystallography , inorganic chemistry , stereochemistry , polymer chemistry , organic chemistry , biochemistry , physics , receptor , astronomy , electrical engineering , engineering
The new pyrimidyl‐ and naphthyridyl‐modulated pentapyridyltetramine ligand (H 3 N 9 ‐2pm) and its linear nona‐ and octanickel chain complexes were successfully synthesized. The nonanickel complex [Ni 9 (μ 9 ‐N 9 ‐2pm) 4 Cl 2 ](PF 6 ) 2 ( 1 ) contains two fully delocalized, mixed‐valence [Ni 2 (napy) 4 ] 3+ units. Magnetic measurements performed on the defective octanuclear complex [Ni 8 (μ 8 ‐N 9 ‐2pm) 4 Cl 2 ](PF 6 ) 2 ( 2 ) demonstrate that the metal chain provides a pathway of magnetic superexchange coupling over the extended metal atom chain (EMAC). (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)