Abstract
Two binuclear compounds [Ni2(pmdtn)2(tp)(H 2O)2](ClO4)2(H2O) 4 (1) and [Ni2(pmdtn)2(tp)(N3) 2](H2O)4 (2) have been prepared by using the multibinding terephthalate (=tp) dianion and the tridentate capping ligand N,N,N′,N′,N″-pentamethyldiethyltriamine (=pmdtn) and have been characterized by X-ray crystallography and magnetic measurements. The crystal structures of both complexes show distorted octahedral geometries around the Ni(II) centers linked by the tp bridges in a bisbidentate fashion. The dihedral angles between the benzene rings and carboxylate groups correspond to 14.2° for 1 and 21.5° for 2. The intradimer distance of Ni⋯Ni through the tp ligand for 1 and 2 are 10.731 and 10.800 Å, respectively. The magnetic data reveal weak antiferromagnetic interactions transmitted by the tp bridge with J=-0.18 cm-1 (1) and -0.02 cm -1 (2), which is explained by the structural parameters.
Original language | English |
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Pages (from-to) | 1379-1384 |
Number of pages | 6 |
Journal | Polyhedron |
Volume | 23 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2004 May 6 |
Bibliographical note
Funding Information:This work is supported by the Korea Research Foundation (Grant No. KRF-2003-003-C00073).
Keywords
- Binuclear complexes
- Crystal structures
- Magnetic properties
- Nickel(II) compounds
- Terephthalate ligand
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry