Abhinandan Rana

Three-Dimensional Silver(I)-Thiodiglycolate Coordination Polymer with Weak Ag–Ag Bond

Reaction of thiodiglycolic acid and silver nitrate under ultrasonic condition forms a 3D supramolecular framework of silver with composition [Ag2(tdga)]n (1). X-ray single crystal structure analysis reveals repetition of paddle wheel units in the network. A weak Ag–Ag bond is present in the complex. A new μ8-coordination mode of the thiodiglycolate ligand is identified. Photoluminescence and thermal characterization of the complex was examined.Graphical AbstractNovel 3D silver coordination polymer with Ag–Ag bond is synthesized using thiodiglycolic acid ligand and characterized by X-ray diffraction, IR, photoluminescence and TG analysis. The ligand displays a unique type of coordination.

Two New Coordination Polymers of Manganese(II) with O/O- and N/O-Donor Ligands: Synthesis, Structure, Luminescence Study and Thermal Behavior

Two new coordination polymers of Mn(II), of formula C12H18MnN8O6 (1) and C21H16MnO9 (2), have been synthesized by using two different kind of ligands, namely 5-methyl-7-oxo-(1,2,4)triazolo(1,5-a)pyrimidine (HmtpO) and 3-(2-furyl)prop-2-enoic acid (fproH). The X-ray single crystal structure analysis shows that complex 1 is a discrete molecular complex that turns into a 3D network through hydrogen bonding and π–π stacking interactions. Complex 2 is 1D polymeric chain comprising hexacoordinated Mn(II) centers. Luminescence study revealed the presence of intraligand π*–π transitions. The thermal stability of the complexes has been also investigated by thermogravimetric analysis.Graphical AbstractTwo new coordination polymer of Mn(II) have been synthesized. X-ray single crystal structure analysis revealed that complex 1 is 3D via supramolecular interactions and complex 2 is a 1D chain. Luminescence and thermal characterization has been done for the complexes.

Synthesis, crystal structure, thermal, and photoluminescence properties of Cd carboxylate coordination polymers: a new 2-D structure and reinvestigation of Cd tartrate

A new 2-D coordination polymer, [Cd(HnicO)(pyc)(H2O)] n (1) (H2nicO = 2-oxynicotinic acid, pycH = pyridine-4-carboxylic acid), and the [Cd3(tartr)3] n salt (2) (tartrH2 = tartaric acid) have been synthesized and structurally characterized. The former is stabilized by H-bonds to give a 3-D architecture. Complex 2, that represents a reinvestigation of Cd tartrate, has been compared with isomorphous [Cd3(tartr)3] structures in terms of the unit cell void and the respective water content, indicating for these compounds the aptitude to crystallize with a small, but different, amount of lattice water. Thermogravimetric and luminescent characterization of 1 were performed.