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- Title
Phosphine Oxide Ligand Based Tetrahedral Co<sup>II</sup> Complexes with Field‐induced Slow Magnetic Relaxation Behavior Modified by Terminal Ligands.
- Authors
Yang, Rui‐Chong; Wang, Dan‐Ru; Liu, Jun‐Liang; Wang, Yu‐Fei; Lin, Wei‐Quan; Leng, Ji‐Dong; Zhou, Ai‐Ju
- Abstract
Two isostructural mononuclear CoII complexes, [Co(xantpo)(NCE)2] (E=S (1) and O (2); xantpo=9,9‐dimethyl‐4,5‐bis(diphenylphosphoryl) xanthene), supported by a bidentate phosphine oxide ligand are reported. The cobalt complexes exhibit characteristic tetrahedral structures coordinated with two oxygen and two nitrogen atoms. Magnetic property measurements show their similar static magnetic behaviours but very different dynamic magnetic behaviours. Both complexes show field‐induced slow magnetic relaxation behaviours, but the relaxation of 2 is much slower than that of 1. Fittings to the magnetic data and ab initio CASSCF calculations reveal significant changes in the zero field splitting (ZFS) parameters (D and E), which can be attributed to the small geometrical changes of the Co ions and the different ligand field strength of the two terminal ligands.
- Subjects
MAGNETIC relaxation; PHOSPHINE oxides; MAGNETIC measurements; LIGANDS (Chemistry); MAGNETIC properties; COBALT compounds
- Publication
Chemistry - An Asian Journal, 2019, Vol 14, Issue 9, p1467
- ISSN
1861-4728
- Publication type
Article
- DOI
10.1002/asia.201900280