Synthesis and crystal structure of cis-dioxobis(N-phenyl-salicylideniminato)molybdenum(VI) MoO/sub 2/ /N(Ph) = CH-C/sub 6/H/sub 4/-O//sub 2/
The synthesis and x-ray diffraction analysis (lambdaMo, 2019 reflections, anisotropic least-squares method, H atoms in calculated positions, R = 0.042) of MoO/sub 2/L/sub 2/ (I), where L = N(Ph) = CH-C/sub 6/H/sub 4/-O, have been carried out. The crystals are monoclinic: ..cap alpha.. = 22.765, b = 6.717, c = 15.507 A, ..beta.. = 107.59/sup 0/, rho(mea) = 1.55 g/cm/sup 3/, Z = 4, space group C2/c (the molecule is on the twofold axis). The Mo atom has octahedral coordination owing to the two O(oxo) atoms in cis positions, two N(L) atoms in the trans positions to the O(oxo) atoms, and two O(L) atoms in trans positions to one another. The lengths of the bonds are as follows: Mo-O(oxo) = 1.706, Mo-N(L) = 2.382, Mo-O(L) = 1.942 A. The Mo atom is displaced from the center of the octahedron 0.162 A toward the multiply bonded ligands (the O(oxo)-O(oxo) edge). The six-membered MoNOC/sub 3/ chelate ring has an asymmetrically twisted boat conformation with deviations of the Mo and C(1) atoms from the C/sub 2/ON plane equal to +0.651 and -0.128 A, respectively. The Mo-N(O) bonds are strongly elongated due to the trans influence of the oxo ligands. The results of the investigation of complex I have been compared with the literature data for monomeric octahedral dioxo complexes of Mo(6+) with n-dentate L ligands (n = 2 to 4) containing Mo-N(L) bonds in the trans positions to the M=O(oxo) bonds.
- Research Organization:
- N.S. Kurnakov Institute of General and Inorganic Chemistry, USSR
- OSTI ID:
- 6321553
- Journal Information:
- Sov. J. Coordinat. Chem.; (United States), Vol. 11:10; Other Information: Translated from Koordinatsionnaya Khimiya; 11: No.10, 1399-1406(Oct 1985)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
MOLYBDENUM COMPLEXES
MONOCLINIC LATTICES
SYNTHESIS
X-RAY DIFFRACTION
BOND ANGLE
BOND LENGTHS
CATALYTIC EFFECTS
CHELATES
INTERATOMIC DISTANCES
LATTICE PARAMETERS
LEAST SQUARE FIT
MOLECULAR STRUCTURE
MOLYBDATES
ORGANOMETALLIC COMPOUNDS
SPACE GROUPS
STRUCTURAL CHEMICAL ANALYSIS
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DIMENSIONS
DISTANCE
LENGTH
MAXIMUM-LIKELIHOOD FIT
MOLYBDENUM COMPOUNDS
NUMERICAL SOLUTION
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SCATTERING
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties
360602 - Other Materials- Structure & Phase Studies