Modulation of Spin-Crossover Behavior in an Elongated and Flexible Hofmann-Type Porous Coordination Polymer

Ryo Ohtani, Masashi Arai, Akihiro Hori, Masaki Takata, Shinji Kitao, Makoto Seto, Susumu Kitagawa, Masaaki Ohba

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Three porous coordination polymers {Fe(dpa)[Pt(CN)4]·G·nH2O} (1-G; dpa = 1,2-di(4-pyridyl)ethane, G = dpa, bibenzyl (bbz) and stilbene (stb)) have been prepared by using a long and flexible ligand dpa. These compounds formed analogous 3-D elongated Hofmann-type frameworks based on 2-D planar layers extended by Pt-CN-Fe linkages with dpa as flexible pillar ligands. 1-dpa showed a characteristic three-step spin transition (ST) in the temperature range 180-240 K. The ST behavior was reversibly modulated by dehydration and hydration processes in keeping with the three steps. 1-bbz and 1-stb exhibited a gradual three-step ST over the range 80-200 K and an abrupt ST with Tc = 163 K. The guest-dependent cooperativity of the ST behavior is discussed by considering the flexibility of the framework and guest molecules.

Original languageEnglish
Pages (from-to)104-110
Number of pages7
JournalJournal of Inorganic and Organometallic Polymers and Materials
Volume23
Issue number1
DOIs
Publication statusPublished - Jan 1 2013

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry

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