School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, UK LS2 9JT. m.a.halcrow@ leeds.ac.uk
Chem Soc Rev. 2011 Jul;40(7):4119-42. doi: 10.1039/c1cs15046d. Epub 2011 Apr 11.
Spin-crossover compounds are becoming increasingly popular for device and sensor applications, and in soft materials, that make use of their switchable colour, paramagnetism and conductivity. The de novo design of new solid spin-crossover compounds with pre-defined switching properties is desirable for application purposes. This challenging problem of crystal engineering requires an understanding of how the temperature and cooperativity of a spin-transition are influenced by the structure of the bulk material. Towards that end, this critical review presents a survey of molecular spin-crossover compounds with good availability of crystallographic data. A picture is emerging that changes in molecular shape between the high- and low-spin states, and the ability of a lattice to accommodate such changes, can play an important role in determining the existence and the cooperativity of a thermal spin-transition in the solid state (198 references).
自旋交叉化合物在器件和传感器应用中越来越受欢迎，在软材料中，它们利用其可切换的颜色、顺磁性和导电性。具有预定义开关特性的新型固态自旋交叉化合物的从头设计是应用的理想选择。这种具有挑战性的晶体工程问题需要了解温度和自旋转变的协同性如何受块状材料结构的影响。为此，这篇重要的评论介绍了具有良好晶体学数据可获得性的分子自旋交叉化合物的调查。出现的情况是，高低自旋态之间的分子形状变化，以及晶格容纳这种变化的能力，可以在确定固态热自旋转变的存在和协同性方面发挥重要作用（198 个参考文献）。
