Issue 8, 2009
From the journal:

CrystEngComm

Drastic steric effects from, respectively, a hydrogen, a methyl and an ethyl group on the coordination network of a zinc(II)–4,4′-bipyridine–carboxylato ternary system†

Pongthipun Phuengphai,a   Sujittra Youngme,*a   Palangpon Kongsaeree,b   Chaveng Pakawatchai,c   Narongsak Chaichit,d   Simon J. Teat,e   Patrick Gamezf  and  Jan Reedijkf  

* Corresponding authors

a Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
E-mail: sujittra@kku.ac.th

b Department of Chemistry, Faculty of Science, Mahidol University, Bangkok, Thailand

c Department of Chemistry, Faculty of Science, Prince of Songkla University, Hatyai Songkla, Thailand

d Department of Physics, Faculty of Science and Technology, Thammasat University Rangsit, Pathumthani, Thailand

e ALS Berkeley Lab, 1 Cyclotron Road, MS–400, Berkeley, CA, USA

f Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, PO Box 9502, RA Leiden, The Netherlands

Abstract

The combination of a [zinc(II)–4,4′-bpy] coordination moiety with, respectively, formato, acetato and propionato ligands leads to the formation of the compounds {[Zn3(4,4′-bpy)3.5(µ-O2CH)4 (H2O)2](ClO4)2(H2O)2}n (1), {[Zn3(4,4′-bpy)3(µ-O2CCH3)4(H2O)2](PF6)2(H2O)2}n (2) and {[Zn3(4,4′-bpy)4(µ-O2CCH2CH3)4](ClO4)2(4,4′-bpy)2(H2O)4}n (3). The molecular structures determined by single-crystal X-ray diffraction data reveal significant changes, which are apparently due to the sole different steric hindrance between a H atom (formato, compound 1), a methyl group (acetato, compound 2) and an ethyl group (propionato, compound 3). The three coordination materials have been fully characterized and their thermal decomposition behavior has been investigated. The 3D (1), 1D (2) and 2D (3) networks exhibit voids that contain the counter-ions and guest molecules as well, namely water for compounds 1 and 2, and water/4,4′-bpy for compound 3.

Graphical abstract: Drastic steric effects from, respectively, a hydrogen, a methyl and an ethyl group on the coordination network of a zinc(II)–4,4′-bipyridine–carboxylato ternary system

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Article information

DOI
https://doi.org/10.1039/B901607D
Article type
Paper
Submitted
26 Jan 2009
Accepted
05 May 2009
First published
21 May 2009

CrystEngComm, 2009,11, 1723-1732

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Drastic steric effects from, respectively, a hydrogen, a methyl and an ethyl group on the coordination network of a zinc(II)–4,4′-bipyridine–carboxylato ternary system

P. Phuengphai, S. Youngme, P. Kongsaeree, C. Pakawatchai, N. Chaichit, S. J. Teat, P. Gamez and J. Reedijk, CrystEngComm, 2009, 11, 1723 DOI: 10.1039/B901607D

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