Pseudohalogeno-Bonding of Thallium(III) Porohyrins, Stabilization of Isocyano Bonding. Crystal Structure of Isocyano(5,10,15,20-tetraphenylporphyrinato)thallium(III)

DOI: 10.1039/DT9910003413

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 3413 - 3418 (1991)

Update date:2022-07-29

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Authors:

Coutsolelos, Athanassios G.

Tsapara, Anna

Daphnomili, Dimitra

Ward, Donald L.

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Article abstract of DOI:10.1039/DT9910003413

Thallium(III) porphyrin complexes of the type have been prepared.The stereochemistry of the metal has been established by IR and 1H NMR spectroscopy and isocyano bonding in confirmed by X-ray diffraction methods using Mo-Kα radiation.Crystals are monoclinic, space group P2₁/n, with a = 10.061(8), b = 16.161(12), c = 21.173(15) Angstroem, β = 90.80(6) deg and Z = 4; R = 0.023 and R'= 0.028 for 4833 observed reflections.The tallium atom is five-co-ordinated by the four nitrogen atoms (N_p) of the porphyrin plane and one nitrogen atom, N(25), of the isocyano group: mean Tl-N_p 2.222(10), Tl-N(25) 2.260(3) Angstroem, N(25)-Tl-N_p 110.4(1) Tl-N(25)-C(26) 175.3(4) deg.

Full text of DOI:10.1039/DT9910003413

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