A cyanido-bridged luminescent coordination polymer composed of janus-type layers and its two-dimensional negative thermal expansion

Kenta Sasaki, Haruka Yoshino, Jingo Kitano, Benjamin Le Ouay, Ryo Ohtani, Masaaki Ohba

Research output: Contribution to journalArticlepeer-review

Abstract

A luminescent two-dimensional coordination polymer of type [Cd(H2O)(EtOH)][ReN(CN)4(H2O)]¢2H2O (CdRe) incorporating “Janus-type” cyanido-bridged layers was synthesized. Within each layer of CdRe, the asymmetric [ReN(CN)4]21 units are arranged so that all nitrides are oriented in the same direction. Moreover, Cd ions also have an asymmetric coordination structure, with ethanol being bound axially on the nitride side, and water on the opposite side. Layers are then stacked in a head-to-head manner, defining a succession of hydrophilic and hydrophobic interlayer domains. CdRe exhibits anisotropic thermal expansion including in-plane negative and out-of-plane positive thermal expansion behavior, and shows green emission (em = 509 nm) originating from the metal-centered dd transition of [ReN(CN)4]21 units.

Original languageEnglish
Pages (from-to)1577-1580
Number of pages4
JournalChemistry Letters
Volume50
Issue number8
DOIs
Publication statusPublished - Aug 2021

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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