Tacticity versus dimension of the extended structures in the crystals of heterospin magnets made of transition-metal complexes with the poly(aminoxyl) radical
- 1 January 1998
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in New Journal of Chemistry
- Vol. 22 (2) , 201-210
- https://doi.org/10.1039/a707641j
Abstract
Bis- and tris(aminoxyl) radicals and di(4-pyridyl)diazomethane form crystalline complexes with extended structures upon reaction with [M(hfac)2] (M=MnII or CuII, and hfac=hexafluoroacetylacetonate). Organic 2p and metal 3d spins in these complexes order at 3.4–46 K depending on the dimensions of the extended structures and the magnitude of exchange coupling between the adjacent spins. In the crystals of one-dimensional systems, the polymeric chains are isotactic in that free radical or precursor ligands and/or metal centres have the same chirality along any given chain. The polymeric chains are syndiotactic and cross link to form two-dimensional honeycomb or three-dimensional crossed parallel networks.Keywords
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