RESUMEN
In the title compound, [Nb(CH(3)O)(2)(C(5)H(7)O(2))Cl(2)], a slightly distorted octa-hedral coordination geometry is observed around the Nb(V) atom with Nb-O distances in the range of 1.8254â (16)-2.0892â (16)â Å and Nb-Cl distances of 2.3997â (14) and 2.4023â (12)â Å. The O-Nb-O angles vary between 81.36â (7) and 172.65â (7) °, while the trans Cl-Nb-Cl angle is 167.34â (2)°. There are no hydrogen bonds observed.
RESUMEN
The asymmetric unit of the title tetra-nuclear niobium(V) compound, [Nb(4)(C(2)H(5)O)(8)(C(5)H(7)O(2))(4)O(4)], contains two Nb(V) atoms, two bridging O atoms, two acetyl-acetonate and four ethano-late ligands. Each Nb(V) atom is six-coordinated by the bridging O atoms, two ethano-late and one chelating acetyl-acetonate ligands. The Nb-O distances vary between 1.817â (2) and 2.201â (2)â Å and the O-Nb-O angles vary between 78.88â (8) and 102.78â (9)°, illustrating the significant distortion from ideal ocahedral geometry. The rest of the tetra-nuclear unit is generated through an inversion centre. The C atoms of two of the ethano-late mol-ecules are disordered over two sites [occupancy ratio 0.601â (12):0.399â (12)].
RESUMEN
In the title compound, [Nb(CH(3)O)(3)(C(5)H(7)O(2))Cl], the Nb(V) atom is coordinated by two O atoms from the chelating acetyl-acetonate ligand, three O atoms from the methano-late groups and one chloride ligand. The octa-hedral environment around niobium is slightly distorted with Nb-O distances in the range 1.8603â (15)-2.1083â (15)â Å and an Nb-Cl distance of 2.4693â (9)â Å. The O-Nb-O angles vary between 80.74â (6) and 100.82â (7)°, while the trans Cl-Nb-O angle is 167.60â (5)°. There are no hydrogen bonds observed, only an inter-molecular C-Hâ¯O inter-action.