dc.contributor.author |
Jyai, R.N. |
|
dc.contributor.author |
Srinivasan, B.R. |
|
dc.date.accessioned |
2018-10-15T08:01:33Z |
|
dc.date.available |
2018-10-15T08:01:33Z |
|
dc.date.issued |
2019 |
|
dc.identifier.citation |
Journal of Molecular Structure. 1178; 2019; 89-99. |
en_US |
dc.identifier.uri |
https://doi.org/10.1016/j.molstruc.2018.10.012 |
|
dc.identifier.uri |
http://irgu.unigoa.ac.in/drs/handle/unigoa/5462 |
|
dc.description.abstract |
The syntheses and crystal structures of three anionic water rich phthalates charge balanced by piperazinediium (pipH sub(2)) sup(2+) viz. (pipH sub(2))[M(H sub(2)O) sub(4)(pht) sub(2)]·8H sub(2)O [M = Ni (1), Co (2) and Cu(3)] (pht = phthalate) are reported. Reaction of 1–3 with imidazole (im) results in the formation of [M(im) sub(6)](pht)·H sub(2)O [M = Ni (4) and Co (5)] and [Cu2(H2O)(im) sub(4)(pht) sub(2)]·H sub(2)O (6) respectively. Compounds 1–6 have been characterised by spectral, thermal, electrochemical and magnetic studies and their structures determined. The phthalate ligand displays a monodentate binding mode in the bis(phthalato) compounds 1–3. The centroid to centroid distance (Cg⋯Cg) between the adjacent phthalate rings in 1–3 is approx. 4.0 Å. In the hexaimidazole compounds 4 and 5 phthalate functions as a charge balancing dianion. The H-bonding interactions among lattice water molecules lead to the formation of a water dodecamer cluster in 1–3 with R6 water motif which further extends into a staircase pattern with T4(2)6(2) extended motif. The intra- and intermolecular H-bonding via CH⋯O, NH⋯O, OH⋯N and OH⋯O interactions results in an intricate supramolecular architecture. Thermal studies of 1–3 reveal interesting dehydration and rehydration characteristics. Compounds 1 and 2 undergo crystalline-amorphous-crystalline transformation during de- and rehydration. |
en_US |
dc.publisher |
Elsevier |
en_US |
dc.subject |
Chemistry |
en_US |
dc.title |
Syntheses, structures, reactivity studies and properties of anionic water rich bivalent metal phthalates |
en_US |
dc.type |
Journal article |
en_US |
dc.identifier.impf |
y |
|