Journal article
Spin-Crossover 2-D Hofmann Frameworks Incorporating an Amide-Functionalized Ligand: N-(pyridin-4-yl)benzamide
X Ong, M Ahmed, L Xu, AT Brennan, C Hua, KA Zenere, Z Xie, CJ Kepert, BJ Powell, SM Neville
Chemistry Switzerland | MDPI | Published : 2021
Abstract
Two analogous 2-D Hofmann-type frameworks, which incorporate the novel ligand N-(pyridin-4-yl)benzamide (benpy) [FeII(benpy)2M(CN)4]·2H2O (M = Pd (Pd(benpy)) and Pt (Pt(benpy))) are reported. The benpy ligand was explored to facilitate spin-crossover (SCO) cooperativity via amide group hydrogen bonding. Structural analyses of the 2-D Hofmann frameworks revealed benpy-guest hydrogen bonding and benpy-benpy aromatic contacts. Both analogues exhibited single-step hysteretic spin-crossover (SCO) transitions, with the metal-cyanide linker (M = Pd or Pt) impacting the SCO spin-state transition temperature and hysteresis loop width (Pd(benpy): T 1 ↓↑: 201, 218 K, 2 ↓↑: 206, 226 K, ∆T: 20 K). The pa..
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Awarded by Australian Nuclear Science and Technology Organisation
Funding Acknowledgements
We thank the ARC for Fellowships and Discovery Project funding. Access and use of the facilities of the Australian Synchrotron was supported by ANSTO. This research was facilitated by access to Sydney Analytical, a core research facility at the University of Sydney.