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Title
Abrupt spin transition in a modified-terpyridine cobalt(II) complex with a highly-distorted [CoN6] core
Author(s)
Manabu NakayaShinya HayamiMasaaki NakamuraLeonard F. LindoyRyo Ohtani신종원
Publication Year
2018-10-21
Abstract
The cobalt(II) complex incorporating π-conjugated substituent, [Co(Naph-C2-terpy)2](BF4)2 (1;
Naph-C2-terpy = 4’-(2-naphthoxy(ethoxy))-2,2’:6’,2’’-terpyridine), exhibits an abrupt spin transition (ST)
behavior (cooperative factor C = 0.91) while its solvated product, 1·2MeOH, shows gradual spin crossover
(SCO) behavior (C = 0.49). Single crystal X-ray structural analyses demonstrated that the octahedral
coordination core [CoN6] in 1 shows larger distortion in both high-spin and low-spin states than solvated
1·2MeOH or another two derivatives, [Co(R-terpy)2](BF4)2 (R = 2-naphthyl (2), 9-anthracenyl (3)). The
respective distortion parameters (Σ) are compared with those for previously reported SCO cobalt(II) compounds.
The highly-distorted [CoN6] core in 1 (Σ = 126 in the HS state and 101.6 in the LS state) was stabilized
by strong intermolecular interactions and observed an abrupt ST behaviour.
Journal Title
Dalton Transactions
Citation Volume
47
ISSN
1477-9226
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Appears in Collections:
7. KISTI 연구성과 > 학술지 발표논문
URI
https://repository.kisti.re.kr/handle/10580/14757
http://www.ndsl.kr/ndsl/search/detail/article/articleSearchResultDetail.do?cn=NART91511788
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