Restudies of the spin state in (isothiocyanato)(pyridine)(porphinato)iron(III) hemipyridine complex. A spin-crossover complex with two magnetically distinct sites
Resource
Journal of Organometallic Chemistry 601 (2): 253-258
Journal
Journal of Organometallic Chemistry
Pages
253-258
Date Issued
2000
Date
2000
Author(s)
Dong, Teng-Yuan
Ho, Pei-Har
Cheng, Ching-Hung
Wang, Yu
Abstract
The results of low-temperature X-ray determination, Mössbauer and magnetic measurement of spin-crossover (isothiocyanato)(pyridine)(porphinato)iron(III) hemipyridine are reported. The features in the 77 K Mössbauer spectrum include two doublets, one with a quadrupole splitting (ΔEQ) of 1.96 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 the fact that the tetraphenyl complex is a spin-crossover complex. © 2000 Elsevier Science S.A.
Type
journal article
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