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Single‐Crystalline Organoiridium Complex for Gas‐Triggered Chromogenic Switches and Its Applications on CO Detection and Reversible Scavenging
Author(s) -
Sun LiYing,
An YuanYuan,
Ma LiLi,
Han YingFeng
Publication year - 2019
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201900151
Subject(s) - chemistry , metallacycle , carbon monoxide , chromogenic , molecule , crystallinity , metal , adduct , photochemistry , selectivity , crystallography , x ray crystallography , organic chemistry , diffraction , physics , catalysis , chromatography , optics
Summary of main observation and conclusion Nonporous molecular single crystals of coordinatively unsaturated 16‐electron metallacycle are found to undergo highly selective – yet reversible – binding of CO over CH 4 , H 2 , N 2 , CO 2 , various volatile organic compounds and water, through binding of the molecule to its metal centers. Carbon monoxide is taken up by black crystals and subsequently liberated from the corresponding orange CO adduct by reversible metal coordination, the structural evidence obtained from in situ X‐ray diffraction. The single‐crystallinity of the metallacycle is retained even after several cycles. The material, when adsorbed on silica, shows remarkable sensitivity and selectivity for CO, allowing visual CO sensing in the solid state. The metallacycle offer the possibility of serving as readily regenerable scavenger for removing trace CO from gas mixtures with N 2 .