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IJC-A Vol.50A [2011] >
IJC-A Vol.50A(06) [June 2011] >
| Title: | Supramolecular aggregation in alkaline earth metal 3- and 4-hydroxybenzoates using 1,10-phenanthroline auxiliary |
| Authors: | Korah, Remya
Kalita, Laksheswar
Murugavel, Ramaswamy |
| Keywords: | Coordination chemistry
Aggregation
Supramolecular aggregation
Benzoates
Auxiliary ligands
Crystal structures |
| Issue Date: | Jun-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The
interaction of group 2 metals with 3- and 4-hydroxybenzoic acids in presence of
chelating N-donor ligand
1,10-phenanthroline (phen) has been investigated. The 3-hydroxybenzoate derivatives [Ca(3-hba)2(phen)2(H2O)3]n (1), [Sr(3-hba)2(phen)2(H2O)2]n (2), and [Ba(3-hba)2(phen)2(H2O)2]n (3) have been obtained by treatment of the
corresponding metal carbonates with 3-hydroxybenzoic acid and
1,10-phenanthroline, while the 4-hydroxybenzoate derivatives
[Ca(4-hba)2(phen)2(H2O)]
(4), [Sr(4-hba)2(phen)2(H2O)4]
(5), [Ba(4-hba)2(phen)2(H2O)2]
(6) have been prepared by
a similar method using 4-hydroxybenzoic acid. The compounds have been characterized by
elemental analysis, thermal analysis, and infrared and 1H NMR
spectroscopic studies. The solid-state structures of (2-4) and (6) have been established
by single-crystal X-ray diffraction studies. The compounds are monomeric in the
solid state although they exhibit considerable variations in their molecular
structures in terms of binding mode of the hba ligands and the coordination
geometry around the metal ions. All the compounds form polymeric networks in
the solid state with the aid of
O-H O, C-HO and N-HO hydrogen bonding and p-p interactions. |
| Page(s): | 763-774 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.50A(06) [June 2011]
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