Crystal Structure of the Organonickel Sigma Complex [NiBr(Tcpp)(bpy)]
A. A. Kagileva, b (https://orcid.org/0000-0002-5603-1311), Z. N. Gafurova (https://orcid.org/0000-0001-6615-8968), I. F. Sakhapova (https://orcid.org/0000-0002-7440-1486), D. R. Islamovc (https://orcid.org/0000-0002-5988-1012), A. O. Kantyukova, b (https://orcid.org/0000-0002-2285-300X), I. K. Mikhailova, b (https://orcid.org/0000-0001-9373-2996), and D. G. Yakhvarova, b, * (https://orcid.org/0000-0002-3906-8841)
aArbuzov Institute of Organic and Physical Chemistry, Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”, Kazan, 420088 Russia
bA.M. Butlerov Institute of Chemistry, Kazan (Volga Region) Federal University, Kazan, 420008 Russia
cLaboratory for Structural Studies of Biomacromolecules, Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”, Kazan, 420111 Russia
email: *yakhvar@iopc.ru
Received 23 October, 2022
Abstract—
The low-stable organonickel sigma-complex (2,2'-bipyridyl)bromo(2,4,6-tricyclopentylphenyl)nickel(II) [NiBr(Tcpp)(bpy)] was obtained by a modified procedure of preparative electrochemical synthesis and isolation. The crystal structure of the resulting organonickel complex was determined by the X-ray diffraction method. Its structure was compared with that of its more stable analogue [NiBr(Tchp)(bpy)], where Tchp is 2,4,6-tricyclohexylphenyl. It was found that a more efficient network of intermolecular interactions is formed in the [NiBr(Tchp)(bpy)] crystal, which is responsible for its higher stability, whereas [NiBr(Tcpp)(bpy)] is more likely to enter into an equilibrium Schlenk reaction, leading to its decomposition.
Keywords:
organonickel sigma-complexes,
preparative electrolysis,
crystal structure
DOI: 10.1134/S1070363222120155