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Smoothing the single-crystal to single-crystal conversions of a two-dimensional metal–organic framework via the hetero-metal doping of the linear trimetallic secondary building unit

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Abstract

The two-dimensional (2D) metal–organic framework (MOF) [Cd2.25Co0.75(BTB)2(DEF)4]·2(DEF)0.5 (1a, BTB = benzene-1,3,5-tribenzolate; DEF = N,N′-diethylformamide) featuring linear trimetallic cluster secondary building units (SBUs) and replaceable DEF solvates reacts smoothly with dipyridyl ligands DPS, DPDS, and BIPY (DPS = 4,4′-dipyridyl sulfide; DPDS = 4,4′-dipyridyl disulfide; BIPY = 4,4′-bipyridine), yielding three-dimensional (3D) non-interpenetrated [Cd2.25Co0.75(BTB)2(DPS)2xSol (2) and [Cd2.25Co0.75(BTB)2(DPDS)2xSol (3), and interpenetrated [Cd2.25Co0.75(BTB)2(BIPY)(H2O)2xSol (4). The smooth conversion of 1a to 3 contrasts the drastic single-crystal to single-crystal (SCSC) conversion observed for the homometallic [Cd3(BTB)2(DEF)4]·2(DEF)0.5 (1b), presumably due to the presence of the relatively Lewis acidic Co2+ that lessens the propensity for binding by soft dipyridyl donors. Activated samples of 2–4 showed no obvious absorption of N2 at 77 K, but reversible type I uptake of CO2 at 195 K.

Graphical abstract: Smoothing the single-crystal to single-crystal conversions of a two-dimensional metal–organic framework via the hetero-metal doping of the linear trimetallic secondary building unit

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Publication details

The article was received on 09 Jul 2018, accepted on 10 Sep 2018 and first published on 11 Sep 2018


Article type: Paper
DOI: 10.1039/C8DT02813C
Citation: Dalton Trans., 2018, Advance Article
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    Smoothing the single-crystal to single-crystal conversions of a two-dimensional metal–organic framework via the hetero-metal doping of the linear trimetallic secondary building unit

    M. Chao, J. Chen, D. J. Young, W. Zhang and J. Lang, Dalton Trans., 2018, Advance Article , DOI: 10.1039/C8DT02813C

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