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Tri-?-oxido-bis-[(5,10,15,20-tetra-phenyl-porphyrinato-?N)niobium(V)].

ABSTRACT: In the title dinuclear Nb(V) compound, [Nb(2)(C(44)H(28)N(4))(2)O(3)], each Nb atom is seven-coordinated with three bridging O atoms and four N atoms from a chelating tetra-phenyl-porphyrinate anion. The Nb-O bond lengths range from 1.757?(6) to 2.331?(6)?Å, and the average (niobium-pyrrole N atom) distance is 2.239?Å. In the dinuclear mol-ecule, the Nb?Nb separation is 2.8200?(8)?Å, and the dihedral angle between the two porphyrinate mean planes is 5.4?(1)°. Weak inter-molecular C-H?? inter-actions are present in the crystal structure.

SUBMITTER: Soury R

PROVIDER: S-EPMC3151801 | biostudies-other | 2011 Jul

REPOSITORIES: biostudies-other

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Tri-μ-oxido-bis-[(5,10,15,20-tetra-phenyl-porphyrinato-κN)niobium(V)].

Soury Raoudha R Belkhiria Mohamed Salah MS Daran Jean-Claude JC Nasri Habib H

Acta crystallographica. Section E, Structure reports online 20110604 Pt 7

In the title dinuclear Nb(V) compound, [Nb(2)(C(44)H(28)N(4))(2)O(3)], each Nb atom is seven-coordinated with three bridging O atoms and four N atoms from a chelating tetra-phenyl-porphyrinate anion. The Nb-O bond lengths range from 1.757 (6) to 2.331 (6) Å, and the average (niobium-pyrrole N atom) distance is 2.239 Å. In the dinuclear mol-ecule, the Nb⋯Nb separation is 2.8200 (8) Å, and the dihedral angle between the two porphyrinate mean planes is 5.4 (1)°. Weak inter-molecular C-H⋯π inter-act ...[more]

PMID: 21836860

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