Water-reservoir properties dependent on packing modes of [Ni(II)3L6] cages

Geonwoo Gwak; Seonghyeon An; Dongwon Kim; Martino Di Serio; Ok-Sang Jung

doi:10.1039/D2NJ04751A

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Water-reservoir properties dependent on packing modes of [Ni(ii)₃L₆] cages†

Geonwoo Gwak,^a Seonghyeon An,^a Dongwon Kim,

^a Martino Di Serio

^b and Ok-Sang Jung

*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea
E-mail: oksjung@pusan.ac.kr
Fax: +82 51-5163522
Tel: +82 51-5103240

^b Department of Chemical Sciences, University of Naples Federico II, Naples, Italy

Abstract

Self-assembly of NiX₂ (X⁻ = Br⁻ and Cl⁻) with bidentate dialkyl(3-pyridyl)silane ligands (dialkyl- = (3,3,3-trifluoropropyl)methyl- (L¹), = cyclohexylmethyl- (L²), = ethylmethyl- (L³)) gives rise to stable crystals consisting of the Ni₃L₆ cage motif. Each cage exists as a discrete species encapsulating two halide anions, but its packing mode determines its guest-accessible void volume. The void volume acts as a sustainable reservoir for reversible adsorption/desorption of water in the capacity order Br₂@[Ni₃L²₆(H₂O)₆]Br₄·38H₂O > Br₂@[Ni₃L¹₆(H₂O)₆]Br₄·34H₂O > Br₂@[Ni₃L³₆(H₂O)₆]Br₄·13H₂O > Cl₂@[Ni₃L³₆Cl₃(H₂O)₃]Cl·5C₄H₈O.

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Article information

DOI: https://doi.org/10.1039/D2NJ04751A
Article type: Paper
Submitted: 26 Sep 2022
Accepted: 09 Nov 2022
First published: 09 Nov 2022

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New J. Chem., 2022,46, 23239-23244

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Water-reservoir properties dependent on packing modes of [Ni(II)₃L₆] cages

G. Gwak, S. An, D. Kim, M. Di Serio and O. Jung, New J. Chem., 2022, 46, 23239 DOI: 10.1039/D2NJ04751A

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New Journal of Chemistry