Half a grid is better than no grid: Competition between 2,2′:6′,2′′-terpyridine and 3,6-di(pyrid-2-yl)pyridazine for copper(ii)
Dalton Transactions, ISSN: 1477-9226, Vol: 39, Issue: 9, Page: 2337-2343
2010
- 18Citations
- 16Captures
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Article Description
The reaction between Cu(NO)·3HO, 2,2′:6′,2′′-terpyridine (tpy) and 3,6-di(pyrid-2-yl) pyridazine (1) in a 2:2:1 molar equivalent ratio in aqueous MeCN in the presence of excess NHPF leads to competition between the assembly of the dinuclear half-grid [Cu(1)(tpy)][PF ]·2HO and the mononuclear complex [Cu(1)(OH)][PF]. The yield of [Cu(1)(tpy)][PF]·2H O has been optimized using microwave conditions. [Cu(1) (OH)][PF] can be selectively produced by treating Cu(NO)·3HO with 1 (1:2 molar equivalents) in aqueous MeCN in the presence of NH PF. The single crystal structures of [Cu (1)(tpy)][PF]·4MeNO and [Cu(1)(OH)][PF] are presented. In the [Cu(1)(tpy)] cation, ligand 1 bridges the two copper(ii) centres, each of which is further coordinated by a tpy ligand. The copper(ii) coordination geometry is closely associated with the arrangement of the two tpy ligands which engage in efficient face-to-face π-stacking. Magnetic data for crystalline [Cu (1)(tpy)][PF]·4MeNO are consistent with a weak antiferromagnetic interaction between the two copper(ii) centres. EPR spectroscopic data for a powder sample of [Cu(1)(tpy)][PF]·2H O are consistent with the dinuclear structure, but in frozen DMF and DMSO solutions, the data indicate that the dinuclear structure of [Cu (1)(tpy)] is not preserved. © The Royal Society of Chemistry 2010.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77149121093&origin=inward; http://dx.doi.org/10.1039/b923729a; http://www.ncbi.nlm.nih.gov/pubmed/20162207; https://xlink.rsc.org/?DOI=b923729a; https://dx.doi.org/10.1039/b923729a; https://pubs.rsc.org/en/content/articlelanding/2010/dt/b923729a
Royal Society of Chemistry (RSC)
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