Coordination polymers from calixarene-like [Cu 2(dicarboxylate)2]4 building blocks: Structural diversity via atropisomerism

Heba Abourahma, Graham J. Bodwell, Jianjiang Lu, Brian Moulton, Ian R. Pottie, Rosa Bailey Walsh, Michael J. Zaworotko

Research output: Contribution to journalArticlepeer-review

Abstract

The self-assembly of [Cu2(dicarboxylate)2] 4 nanoscale secondary building units (nSBUs) into coordination polymers can occur in such a way that a range of calix-like atropisomers can exist. Eight compounds have been prepared and crystallographically characterized via reaction between Cu(NO3)2 and angular dicarboxylate ligands: {[Cu2(bdc)2(py)2] 4·guest}n (1a), {[Cu2 (bdc)2 (py)2]4·4nitrobenzene·2EtOH}n (1b), {[Cu2(bdc)2(4-pic)2]4· 4o-dichlorobenzene}n (2), {[Cu2(5-OEt-bdc)2 (py)2]4·8H2O}n (3), {[Cu 2(5-OPr-bdc)2(py)2]4· guest}n (4), {[Cu2(pdc)2(py)2] 4·4MeOH}n (5), {[Cu2(pdc) 2(4-pic)2]4·4H2O} n (6), and {[Cu2(tdc)2 (MeOH)2] 4·4naphthalene·8MeOH}n (7). The following atropisomers, all of which have also been observed in calixarenes, were observed: (a) cone (1a, 3, and 4); (b) partial cone (1b); (c) 1,2-alternate (2 and 5-7); and (d) 1,3-alternate (1a, 3, and 4). The similarities and differences between the crystal structures of 1-7 are detailed herein.

Original languageEnglish
Pages (from-to)513-519
Number of pages7
JournalCrystal Growth and Design
Volume3
Issue number4
DOIs
Publication statusPublished - Jul 2003
Externally publishedYes

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