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Solid state mononuclear divalent nickel spin crossover complexes.

Obaid Ali Qamar1, Cong Cong, Huaibo Ma

  • 1Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 21186, China. iamhbma@njtech.edu.cn.

Dalton Transactions (Cambridge, England : 2003)
|November 18, 2020
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Summary
This summary is machine-generated.

Researchers are exploring divalent nickel complexes for spin crossover behavior, expanding the known "spin crossover family." This work highlights examples and ligand types in these rare, bistable nickel complexes.

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Area of Science:

  • Coordination Chemistry
  • Materials Science

Background:

  • Spin crossover (SCO) complexes with 3d4-3d7 transition metals are well-studied.
  • SCO behavior in 3d8 divalent nickel complexes is less developed but increasingly recognized.

Purpose of the Study:

  • To highlight mononuclear 3d8 nickel spin crossover complexes.
  • To discuss SCO complexes based on ligand types and their role in dynamic rearrangements.

Main Methods:

  • Review of existing literature on nickel spin crossover complexes.
  • Analysis of X-ray single crystal structures.
  • Examination of magnetic and thermodynamic data.

Main Results:

  • Bistable divalent nickel complexes are formally accepted as part of the spin crossover family.
  • Examples of mononuclear 3d8 nickel SCO complexes with characterized solid-state structures are presented.
  • Ligand type is crucial for achieving SCO behavior in nickel complexes.

Conclusions:

  • Nickel spin crossover complexes, though rare, are a growing area of research.
  • Understanding ligand influences is key to developing new nickel SCO materials.
  • Further investigation into these bistable complexes will expand the scope of spin crossover chemistry.