Co(NCS)2(abpt)2 and Ni(NCS)2(abpt)2 [abpt is 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole]: structural characterization of polymorphs A and B

Mason, Helen E.; Howard, Judith A.K.; Sparkes, Hazel A.

doi:10.1107/s2053229621010251

Co(NCS)2(abpt)2 and Ni(NCS)2(abpt)2 [abpt is 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole]: structural characterization of polymorphs A and B

Mason, Helen E.; Howard, Judith A.K.; Sparkes, Hazel A.

Authors

Helen E. Mason

Judith A.K. Howard

Hazel A. Sparkes

Abstract

The synthesis and structures of bis[4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole-κ2N2,N3]bis(thiocyanato-κN)cobalt(II), [Co(NCS)2(C12H10N6)2] or Co(NCS)2(abpt)2, and bis[4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole-κ2N2,N3]bis(thiocyanato-κN)nickel(II), [Ni(NCS)2(C12H10N6)2] or Ni(NCS)2(abpt)2, are reported. In both cases, two polymorphs, A and B, were identified and structurally characterized. For both polymorphs, the structures obtained with the different metals, i.e. CoII or NiII, were found to be isostructural. All of the structures contained an intramolecular N—H⋯N hydrogen bond, C—H⋯N interactions and π–π stacking interactions. No structural evidence was observed for a thermal spin crossover for either of the Co(NCS)2(abpt)2 polymorphs between 300 (2) and 120 (2) K.

Citation

Mason, H. E., Howard, J. A., & Sparkes, H. A. (2021). Co(NCS)2(abpt)2 and Ni(NCS)2(abpt)2 [abpt is 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole]: structural characterization of polymorphs A and B. Acta Crystallographica Section C: Structural Chemistry, 77(12), 777-781. https://doi.org/10.1107/s2053229621010251

Journal Article Type	Article
Acceptance Date	Oct 4, 2021
Online Publication Date	Nov 16, 2021
Publication Date	2021-12
Deposit Date	Feb 9, 2022
Publicly Available Date	Feb 10, 2022
Journal	Acta Crystallographica Section C Structural Chemistry
Publisher	International Union of Crystallography
Peer Reviewed	Peer Reviewed
Volume	77
Issue	12
Pages	777-781
DOI	https://doi.org/10.1107/s2053229621010251

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