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Stepwise coordination isomerism of 2D networks: adsorption of diiodomethane into crystals and recognition in SCSC mode

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Abstract

Reaction of CdI2 with C2-symmetric multidentate N-donor (L) in a mixture of ethanol and dichloromethane produces single crystals of 3(dichloromethane)·2(ethanol)@[CdI2L] (23.26 Å thickness layer) with a new 2D topology of {43·62·8}. These single crystals in tetrahydrofuran are isomerized into new single crystals of 4(tetrahydrofuran)@[CdI2L] (9.15 Å thickness layer) with a 2D topology of sql {44·62}. The tetrahydrofuran solvate molecules of 4(tetrahydrofuran)[CdI2L] are fully replaced by adsorption of dihalomethane molecules in the single-crystal-to-single-crystal (SCSC) mode. The most interesting feature is that both 3(dichloromethane)·2(ethanol)@[CdI2L] and 4(tetrahydrofuran)@[CdI2L] crystals are integral to an efficient and tolerant matrix for recognition of diiodomethane (CH2I2) in the SCSC mode, even though the adsorption rate of 4(tetrahydrofuran)@[CdI2L] crystals is much faster than that of 3(dichloromethane)·2(ethanol)@[CdI2L]. That is, their blue photoluminescence is significantly quenched in the presence of diiodomethane, and recovered by removal of the diiodomethane.

Graphical abstract: Stepwise coordination isomerism of 2D networks: adsorption of diiodomethane into crystals and recognition in SCSC mode

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Supplementary files

Article information


Submitted
26 Apr 2021
Accepted
21 May 2021
First published
25 May 2021

Inorg. Chem. Front., 2021, Advance Article
Article type
Research Article

Stepwise coordination isomerism of 2D networks: adsorption of diiodomethane into crystals and recognition in SCSC mode

J. Kim, J. Park, D. Kim, M. Di Serio and O. Jung, Inorg. Chem. Front., 2021, Advance Article , DOI: 10.1039/D1QI00540E

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