Thallium(I) complexes of cyano-substituted bispyrazolylborate ligands

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Johnson, Donald M.
Eichhorn, David M.
Moore, Curtis E.
Mwania, Tom M.
Zhao, Ningfeng

Johnson, Donald M.; Eichhorn, David M.; Moore, Curtis E.; Mwania, Tom M. & Ningfeng, Zhao. 2012. Thallium(I) Complexes of Cyano-Substituted Bispyrazolylborate Ligands, JOURNAL OF CHEMICAL CRYSTALLOGRAPHY, Volume 42, Number 7 (2012), 746-751, DOI: 10.1007/s10870-012-0310-0


Two thallium scorpionate complexes: dihydrobis(3-phenyl-4-cyanopyrazolyl)boratothallium(I) (TlBp(Ph,4CN)), C20H14BN6Tl and dihydrobis(3-tert-butyl-4-cyanopyrazolyl)boratothallium(I) (TlBp (t-Bu,4CN)), C16H22BN6Tl have been prepared and characterized by X-ray diffraction. Both compounds crystallize in monoclinic space groups, TlBp(Ph,4CN) in P2(1)/n with a = 4.2039(3) , b = 26.2211(17) , c = 16.611(1) , beta = 90.199(3)A degrees, and TlBp (t-Bu,4CN) in P2(1)/c with a = 13.8578(5) , b = 9.6741(4) , c = 14.2790(5) , beta = 95.141(2)A degrees. The two complexes show similar structures with elongated metal-ligand bonds and intermolecular interactions between the metal ion and cyano substituents, allowing the potential construction of cyano-bridged coordination polymers.

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