6533b831fe1ef96bd129849a
RESEARCH PRODUCT
A Bis(diazadiene) Adduct of MoCl 2 : Mononuclear, Octahedral, Undistorted and Diamagnetic
Rinaldo PoliBertrand RebièreFrançois Stoffelbachsubject
MolybdenumDiazadiene ligands010405 organic chemistryChemistryLigandStereochemistry010402 general chemistry01 natural sciencesMagnetic susceptibilityX-ray diffraction0104 chemical sciencesAdductInorganic ChemistryCrystallographyOctahedronSpin stateDiamagnetismMolecule[CHIM.COOR]Chemical Sciences/Coordination chemistryCis–trans isomerismCoordination geometrydescription
The complex [MoCl2(iPr2dad)2] (iPr2dad = iPrN=CH−CH=N−iPr) is obtained in one step by reduction of [MoCl3(THF)3] in the presence of iPr2dad. The X-ray structure reveals a relatively undistorted octahedral coordination geometry with a relative cis configuration and points to a more appropriate description of the ligands as enediamides. The NMR investigation is in agreement with the same cis structure in solution and underlines the diamagnetism of the compound, at odds with previously reported very similar complexes. A bulk magnetic susceptibility measurement further confirms the compound’s diamagnetism. No equilibrium with a dinuclear, metal-metal bonded species is apparent from the solution studies. A DFT calculation on the real molecule and on two R2dad model systems with R = Ph and 4-HOC6H4 reveals how the ligand periphery delicately controls the magnetic and structural properties of this system. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-02-01 | European Journal of Inorganic Chemistry |