19 research outputs found
Carboxylato Molybdenum(V) Complexes: X-Ray Structures of the Dinuclear Pivalato Complexes
Synthesis and identification of pentachloropyridinemodibdate(III) and pentabromopyridinemolybdate(III): crystal structures of [NH2(CH3)2]2[MopyCl5] and [N(CH3)4][MopyCl5] (py = pyridine)
Crystal structure of [N'-(3-bromo-2-hydroxybenzylidene)-2-hydroxybenzohydrazido]( methanol)dioxomolybdenum(VI), C15H13BrMoN2O6
Crystal structure of [N'-(2-hydroxy-4-methoxybenzylidene)-2-hydroxybenzohydrazido]( methanol)dioxomolybdenum(VI) methanol solvate, C16H16MoN2O7·CH3OH, C17H20MoN2O8
Crystallographic Evidence of Nitrate-p Interactions Involving the Electron-Deficient 1,3,5-Triazine Ring.
The reaction of Zn(NO3)2·6H2O or Cu(NO3)2·3H2O with the star-shaped ligand 2,4,6-tris(di-2-picolylamino)[1,3,5]triazine (dipicatriz) in acetonitrile results in the formation of the mono- or trinuclear coordination compounds [Zn(dipicatriz)(NO3)2] (1), [Zn3(dipicatriz)(NO3)6](CH3CN)3 (2), and [Cu3(dipicatriz)(NO3)2(H2O)6](NO3)4 (3), depending on the metal-to-ligand ratios used during the crystallization process. Their crystal structures exhibit unique supramolecular interactions. Compounds 1 and 2 show anion−π interactions between coordinated nitrate ions and the s-triazine ring. Compound 3 exhibits remarkable interactions between two noncoordinated nitrate anions and the two faces of the electron-deficient heteroaromatic ring, corroborating earlier theoretical investigations in this area. New theoretical investigations have been carried out on nitrate−π interactions, taking into account the particular position of the anion toward the aromatic ring observed in the crystal structures