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Selective complexation of 3d metal(II) ions with multidentate and chiral isomers derived from condensation of 2-pyridinecarboxaldehyde with triethylenetetramine

Title
Selective complexation of 3d metal(II) ions with multidentate and chiral isomers derived from condensation of 2-pyridinecarboxaldehyde with triethylenetetramine
Authors
Lee Y.-M.Kim E.-S.Kim H.-J.Choi H.J.Kim Y.-I.Kang S.K.Choi S.-N.
Ewha Authors
이용민
SCOPUS Author ID
이용민scopusscopus
Issue Date
2009
Journal Title
Dalton Transactions
ISSN
1477-9226JCR Link
Citation
no. 1, pp. 126 - 133
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Condensation of 2-pyridinecarboxaldehyde with a stoichiometric amount of triethylenetetramine in isopropyl alcohol yields a mixture of at least two products, a Schiff dibase L1 and a cyclization product with two imidazolidine rings L2, and possibly a Schiff monobase with one imidazolidine ring L3. The 3d metal(ii) salts, Mn(SCN)2, MnCl2, CuBr2, MnI2 and ZnBr2, react selectively with L1 or L2 in this mixture solution to produce Mn(L2)(NCS)21, Mn(L2)Cl22, [Cu(L2)Br]Br·H2O 3, [Mn(L1)]I 24, and [Zn(L1)][ZnBr4] 5, respectively. The presence of the two imidazolidine rings in the coordinated ligand L2 of 1-3 generates two chiral carbon centers. The Mn(ii) ion coordinates stereo-selectively to the [R,R] or [S,S] form of the L2 in hexa-coordinate Mn(ii) compounds 1 and 2, whereas the Cu(ii) ion coordinates with the meso [R,S] form of L2 in 3. © The Royal Society of Chemistry 2009.
DOI
10.1039/b815621b
Appears in Collections:
연구기관 > 기초과학연구소 > Journal papers
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