Crystal structure of a dimeric ?-diketiminate magnesium complex.

ABSTRACT: The solid-state structure of a dimeric ?-diketiminate magnesium(II) complex is discussed. The compound, di-?-iodido-bis-[(-{4-amino-1,5-bis-[2,6-bis-(propan-2-yl)phen-yl]pent-3-en-2-yl-idene}aza-nido-?²N,N')magnesium(II)] toluene sesquisolvate, [Mg₂(C₂₉H₄₁N₂)₂I₂]·1.5C₇H₈, crystallizes as two independent mol-ecules, each with 2/m crystallographic site symmetry, located at Wyckoff sites 2c and 2d. These have symmetry-equivalent magnesium atoms bridged by ?-iodide ligands with very similar Mg-I distances. The two Mg atoms are located slightly below (?0.5?Å) the least-squares plane defined by N-C-C-N atoms in the ligand scaffold, and are approximately tetra-hedrally coordinated. One and one-half toluene solvent mol-ecules are disordered with respect to mirror-site symmetry at Wyckoff sites 4i and 2a, respectively. In the former case, two toluene mol-ecules inter-act in an off-center parallel stacking arrangement; the shortest C to C' (?-?) distance of 3.72?(1)?Å was measured for this inter-action.

SUBMITTER: MacNeil CS 

PROVIDER: S-EPMC5137601 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature