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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.50A [2011] >
IJC-A Vol.50A(09-10) [September-October 2011] >
| Title: | An eight-connected metal organic framework based on Cu5 clusters: Synthesis, structure, magnetic and catalytic properties |
| Authors: | Sarma, Debajit
Natarajan, Srinivasan |
| Keywords: | Coordination polymers
Metal organic framework
Pentameric clusters
Cyanosilylation
Polycarboxylates
Imines
Copper |
| Issue Date: | Sep-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A reaction of copper acetate,
5-nitroisophthalic acid in a water-methanol mixture under solvothermal
condition results in a new metal-organic framework compound, [Cu5(ยต3-OH)2(H2O)6{(NO2)-C6H3-(COO)2}4].5H2O,
(1). The compound contains Cu5
pentameric cluster units connected by 5-nitro isophthalate (NIPA) moieties
forming a CdCl2-like layer, which are further connected by another
NIPA moiety forming the three-dimensional structure. The water molecules in (1) can be reversibly adsorbed. The
removal of water accompanies a change in the colour as well as a structural
re-organization. Magnetic studies suggest strong antiferromagnetic correlations
between the Cu5 cluster units. The compound (1) exhibits heterogeneous Lewis acid catalysis for the
cyanosilylation of imines with more than 95 % selectivity. Compound (1) has been characterized by IR,
UV-vis, TGA, powder XRD studies. |
| Page(s): | 1281-1289 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.50A(09-10) [September-October 2011]
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