Polymorphism in [Co(SCN)(4)(ppz-H)(2)] (ppz, piperazine)Manna, S.C., Jana, A.D., Drew, M.G.B., Mostafa, G. and Chaudhuri, N.R. (2008) Polymorphism in [Co(SCN)(4)(ppz-H)(2)] (ppz, piperazine). Polyhedron, 27 (4). pp. 1280-1286. ISSN 0277-5387 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. To link to this item DOI: 10.1016/j.poly.2007.12.016 Abstract/SummaryA one-pot reaction of [Co(NO3)(2)center dot 6H(2)O and piperazine] with NH4SCN/NaSCN in water-methanol (1:1) solvent leads to two polymorphs of [Co(SCN)(4)(ppz-H)(2)] (ppz, piperazine) (I and II). X-ray crystal structure reveals both have same space group but the differences in the alignment of pendant SCN- leads to two polymorphs. In I, trifurcated N-H...S hydrogen bonding plays a prominent role in crystal packing leading to S...S interactions between SCN fragments but in II, no such trifurcation arises and thereby the crystal packing occurs through hydrogen bonding interactions only leading to a distinctly different network topology. TG/DSC and FT-IR study reveal they are enantiotropically related. (c) 2007 Elsevier Ltd. All rights reserved.
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