Crystal structure of poly[[[?4-5-(9H-carbazol-9-yl)isophthalato][?3-5-(9H-carbazol-9-yl)isophthalato]bis-(di-methyl-formamide)(methanol)dizinc] di-methyl-formamide monosolvate].

ABSTRACT: The structure of the polymeric title compound, {[Zn2(C20H11NO4)2(C3H7NO)2(CH3OH)]·C3H7NO} n , comprises carbazolylisophthalate moieties connecting dimetallic tetra-carboxyl-ate zinc secondary building units (SBUs) parallel to [100] and [010], leading to a layer-like arrangement parallel to (001). Each SBU consists of two Zn atoms in slightly distorted tetra-hedral and octa-hedral coordination environments [Zn?Zn = 3.5953?(6)?Å]. Three carboxyl-ate groups bridge the two Zn atoms in a ?2-O:O' mode, whereas the fourth coordinates through a single carboxyl-ate O atom (?1-O). The O atoms of two di-methyl-formamide (DMF) and one methanol mol-ecule complete the Zn coordination spheres. The methanol ligand inter-acts with the noncoordinating DMF mol-ecule via an O-H?O hydrogen bond of medium strength. Carbazoles between the layers inter-digitate through weak C-H?.? inter-actions to form a laminar solid stacked along [010]. Two kinds of C-H?? inter-actions are present, both with a distance of 2.64?Å, between the H atoms and the centroids, and a third C-H?? inter-action, where the aromatic H atom is located above the carbazole N-atom lone pair (H?N = 2.89?Å). Several C-H?O inter-actions occur between the coordinating DMF mol-ecule, the DMF solvent mol-ecule, and ligating carboxyl-ate O atoms.

SUBMITTER: Lifshits LM 

PROVIDER: S-EPMC4571380 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature