Unusual {⋯HNC2O⋯HCnO}, n = 1 or 2, synthons predominate in the molecular packing of one-dimensional coordination polymers, {Cd[S2P(OR)2]2(3LH2)}n, for R = Me and Et, but are precluded when R = i-Pr; 3LH2 = N,N′-bis(3-pyridylmethyl)oxalamide
Linear, one-dimensional coordination polymers, {Cd[S2P(OR)2]2(3LH2)}n, for R = Me (1), Et(2) and i-Pr(3) have been fully characterised by a variety of physiochemical, spectroscopic, crystallographic and computational techniques. Two-dimensional layers are apparent in the crystals of 1 and 2, being m...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Royal Society of Chemistry
2022
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| Subjects: | |
| Online Access: | http://eprints.sunway.edu.my/2014/1/Unusual%20HNC2O.pdf http://eprints.sunway.edu.my/2014/ http://doi.org/10.1039/d2ce00208f |
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| Summary: | Linear, one-dimensional coordination polymers, {Cd[S2P(OR)2]2(3LH2)}n, for R = Me (1), Et(2) and i-Pr(3) have been fully characterised by a variety of physiochemical, spectroscopic, crystallographic and computational techniques. Two-dimensional layers are apparent in the crystals of 1 and 2, being mediated, respectively, by unusual {···HNC2O···HCnO}, n = 1 or 2, synthons formed between the oxalamide and phosphorus-bound alkoxy residues. Related synthons are not observed in the crystal of 3, with supramolecular tapes, mediated by concatenated {···HNC2O}2 synthons, being formed instead. The observed differences in supramolecular association are ascribed to the increased steric bulk and reduced inductive effect of the R = i-Pr group compared with R = Me and Et. |
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