Journal
CHEMPLUSCHEM
Volume 79, Issue 10, Pages 1523-1531Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.201402088
Keywords
arylhydrazones; copper; hydrogen bonds; isomers; sodium
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Funding
- Foundation for Science and Technology (FCT), Portugal [PEst-OE/QUI/UI0100/2013]
- FCT
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The interaction of sodium(I) and copper(II) with sodium (E,Z)-2-[2-(1-cyano-2-methoxy-2-oxoethylidene)hydrazinyl]benzenesulfonate (NaHL1), sodium 4-[2-(2,4-dioxopentan-3-ylidene)hydrazinyl]benzenesulfonate (NaHL2), and sodium 2-[2-(2,4-dioxopentan-3-ylidene)hydrazinyl]benzenesulfonate (NaHL3) is studied on the basis of competition between intra- and intermolecular hydrogen bonding and coordination. The interplay between such interactions provides an unprecedented strategy towards an easy ((E,Z)E or Z) isomeric resolution of NaHL1 to give the new coordination polymers [Na(H2O)(2)(-HL1)](n) (1) (E form) and [Na-2(H2O)(4)(-HL1)(2)](n)nH(2)O (2) (Z form). It is also applied to the synthesis of the new compounds [Cu(H2O)(6)](HL2)(2)4H(2)O (3) and [Cu(A)L-3]H2O (4) (A=2-(pyridin-2-yl)ethanol). The intra- and intermolecular structural relevance of hydrogen bonding is detailed by X-ray diffraction.
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