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Design and Control of Cooperativity in Spin-Crossover in Metal–Organic Complexes: A Theoretical Overview

1
Department of Condensed Matter Physics and Material Sciences, S N Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata 700106, India
2
Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
*
Author to whom correspondence should be addressed.
Academic Editor: Kazuyuki Takahashi
Inorganics 2017, 5(3), 47; https://doi.org/10.3390/inorganics5030047
Received: 20 June 2017 / Revised: 12 July 2017 / Accepted: 14 July 2017 / Published: 20 July 2017
(This article belongs to the Special Issue Spin-Crossover Complexes)
Metal organic complexes consisting of transition metal centers linked by organic ligands, may show bistability which enables the system to be observed in two different electronic states depending on external condition. One of the spectacular examples of molecular bistability is the spin-crossover phenomena. Spin-Crossover (SCO) describes the phenomena in which the transition metal ion in the complex under the influence of external stimuli may show a crossover between a low-spin and high-spin state. For applications in memory devices, it is desirable to make the SCO phenomena cooperative, which may happen with associated hysteresis effect. In this respect, compounds with extended solid state structures containing metal ions connected by organic spacer linkers like linear polymers, coordination network solids are preferred candidates over isolated molecules or molecular assemblies. The microscopic understanding, design and control of mechanism driving cooperativity, however, are challenging. In this review we discuss the recent theoretical progress in this direction. View Full-Text
Keywords: Spin-Crossover (SCO); stimulus-induced spin transition; crystal engineering of SCO and related complexes Spin-Crossover (SCO); stimulus-induced spin transition; crystal engineering of SCO and related complexes
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Banerjee, H.; Chakraborty, S.; Saha-Dasgupta, T. Design and Control of Cooperativity in Spin-Crossover in Metal–Organic Complexes: A Theoretical Overview. Inorganics 2017, 5, 47.

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