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