Arenedisulfonate-4d–4f 3D heterometallic coordination polymers constructed from 2,7-naphthalenedisulfonate and isonicotinic acid: Structure, luminescence, and magnetic properties

Crystal structure of trans-(1,8-dibutyl-1,3,6,8,10,13-hexa-aza-cyclo-tetra-decane-κ(4) N (3),N (6),N (10),N (13))bis-(isonicotinato-κO)nickel(II) determined from synchrotron data

The title compound, [Ni(C6H4NO2)2(C16H38N6)], was prepared through self-assembly of a nickel(II) aza-macrocyclic complex with isonicotinic acid. The Ni(II) atom is located on an inversion center and exhibits a distorted octa-hedral N4O2 coordination environment, with the four secondary N atoms of the aza-macrocyclic ligand in the equatorial plane [average Ni-Neq = 2.064 (11) Å] and two O atoms of monodentate isonicotinate anions in axial positions [Ni-Oax = 2.137 (1) Å]. Intra-molecular N-H⋯O hydrogen bonds between one of the secondary amine N atoms of the aza-macrocyclic ligand and the non-coordinating carboxyl-ate O atom of the anion stabilize the mol-ecular structure. Inter-molecular N-H⋯N hydrogen bonds, as well as π-π inter-actions between neighbouring pyridine rings, give rise to the formations of supra-molecular ribbons extending parallel to [001].

Tuning the structure, dimensionality and luminescent properties of lanthanide metal–organic frameworks under ancillary ligand influence

Characterization and optical properties of a 1D coordination polymer and 2D and 3D Metal–Organic Frameworks obtained from lanthanide metals, 3-hydroxinaftalene-2,7-disulfonic acid.

Coordination polymers of ZnIIand 5-methoxy isophthalate

Four different coordination polymers were prepared by reaction of Zn(OAc)₂and 5-methoxy isophthalic acid using various aqueous/aqueous alcohol solvent systems.