One- and two-dimensional coordination polymers of zinc(II) with pyrazine. Solid state reactions and decomposition kinetics of the interconversion reactions
- 27 March 2001
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 8,p. 1176-1179
- https://doi.org/10.1039/b009771n
Abstract
The reaction of zinc(II) bromide with pyrazine yielded the two coordination polymers [ZnBr2(pyz)] 1 and [ZnBr2(pyz)2] 2. Crystal structures of these two compounds show that 1 is a 1-D zigzag chain polymer while 2 forms a regular square-grid (4,4) network. Adjacent grids in 2 are slipped in one direction so that the axial bromide ions on one layer project into the cavities of the grids in adjacent layers. The solid-state reaction of 1 with pyrazine yields 2, and 2 in its turn is readily converted into 1 by heating. The activation energy of the latter process has been determined as 99.8 kJ mol−1.Keywords
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