Spin State in (Porphinato)iron(III) Complex. A Spin‐Crossover Complex with Two Magnetically Distinct Sites
作者:
Teng‐Yuan Dong,
Ching‐Hung Cheng,
Ling‐Shao Chang,
Yu Wang,
期刊:
Journal of the Chinese Chemical Society
(WILEY Available online 1999)
卷期:
Volume 46,
issue 1
页码: 1-3
ISSN:0009-4536
年代: 1999
DOI:10.1002/jccs.199900001
出版商: WILEY‐VCH Verlag
关键词: Porphyrin;Spin‐crossover
数据来源: WILEY
摘要:
AbstractThe results of low temperature X‐ray determination, Mössbauer and magnetic measurement of spin‐crossover (isothiocyanato)(porphinato)iron(III) hemipyridine are reported. The features in 77 K Mössbauer spectrum include two doublets, one with a quadrupole splitting (ΔEQ) of 1.961 mm s−1(low‐spin site) and the other with ΔEQ= 0.792 mm s−1(high‐spin site). As the temperature of the sample is increased to 300 K, the signal intensity of the high‐spin site grows to 92% at the expense of the low‐spin signal. The variable‐temperature magnetic susceptibility data also support that the tetraphenyl complex is a s
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