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Spin-Crossover Phenomena of Ni(cyclam)I2 Complex: Magnetostructural Correlations in Two Polymorphs

preprint
submitted on 25.12.2018, 06:31 and posted on 26.12.2018, 15:26 by Yoji Horii, Yuki Kanegae, Kiyonori Takahashi, Akira Fuyuhiro, Hal Suzuki, Motohiro Nakano
Two crystal polymorphs of Ni(cyclam)I2 (cyclam = 1,4,8,11-
tetraazacyclotetradecane) were identified by X-ray structural analysis and their magnetic properties were investigated. Gradual spin-crossover behaviors were found in both polymorphs. Entropy differences between high- and low-spin states obtained by assuming the spin equilibrium model reflected subtle difference of the coordination environment of nickel(II) ion in two polymorphs.

Funding

Examination of "orbiting-ion paramagnetism" in endohedral lithium(+) fullerene [Li+@C60](PF6)- crystal

Japan Society for the Promotion of Science

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Verification of chiral inversion phase transition phenomenon accompanying two-dimensional high density integration of molecular rotor

Japan Society for the Promotion of Science

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History

Email Address of Submitting Author

horiiy17@chem.sci.osaka-u.ac.jp

Institution

Research Center for Structural Thermodynamics, Graduate School of Science, Osaka University

Country

Japan

ORCID For Submitting Author

0000-0002-4789-6858

Declaration of Conflict of Interest

The authors have no conflicts of interest to declare.

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