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Showing 3 results for Soleimannejad

Janet Soleimannejad, Sima Sedghiniya, Mina Nasibipour,
Volume 25, Issue 3 (9-2017)
Abstract

The compound of (Htmb)2[Ni(pydc)­2)].H2O (1) (In that tmb and pydc are 3,3¢,5,5¢-tetramethyl benzidine and pyridine -2,6- dicarboxylic acid, respectively) was synthesized via the proton transfer method and the structure was determined by single crystal X-ray diffraction. This compound crystalized in monoclinic crystal system and C2/c space group. In the asymmetry unit of compound 1, there are half molecule of the [Ni(pydc)­2)]2- anionic complex, one protonated molecule of 3,3¢,5,5¢-tetramethyl benzidine as a counter ion and half of an uncoordinated water molecule. Extensive intermolecular N-H…O and O-H…N, hydrogen bonds along with π… π and C-H …π interactions contribute in self-assembly and formation of a novel supramolecular structure.
Makan Etefagh, Janet Soleimannejad, Sima Sedghiniya, Klodiya Graiff,
Volume 27, Issue 2 (7-2019)
Abstract

A new supramolecular compound of adeninium bis(pyridine-2,6-dicarboxylate) Chromate(III) pyridine-2,6-dicarboxylic acid tetrahydrate (AdH+)[Cr(pydc)2](H2pydc).4H2O (1) (where Ad and H2pydc are adenine and pyridine-2,6-dicarboxylic acid, respectively) was synthesized via proton transfer method and its structure was determined using single crystal X-ray diffraction technique. This compound crystallizes in the orthorhombic crystal system with Pbca space group and the unit cell parameters are a = 14.180(14), b = 13.036(12),
c = 33.98(3) Å and α = β = γ = 90˚. The final R value is 0.053 for 2523 independent reflections. The asymmetric unit of compound 1 contains anionic, cationic and neutral species. The anionic part is a complex of Cr(III) with two coordinated pyridine-2,6-dicarboxylate groups and the cationic part is a protonated adenine. The neutral part has one molecule of pyridine-2,6-dicarboxylic acid and four hydration water molecules. The Cr(III)  atom in compound 1 adopts a distorted octahedral coordination geometry. All six coordination sites have been occupied by two deprotonated pyridine-2,6-dicarboxylate ligands. Non-covalent and intermolecular interactions i.e. Hydrogen bonds and C = O…π interactions are responsible for the self-assembled and regular structure of 1.
Faezeh Moghzi, Farnam Zamani Foroushani, Janet Soleimannejad,
Volume 31, Issue 4 (12-2023)
Abstract

A supramolecular compound of vanadium (V) with [(CH3)2NH2]4[V16O42](SO4).2(O)[+solvent] formula (1) was crystallized in the tetragonal crystal system, space group P42/nnm with Z=2. The final R value of compound 1 is 0.048 for 2214 independent reflections. The asymmetric unit of 1 consists of a half of the dimethylammonium cation, a quarter of sulfate anion, a part of vanadium cluster, and water molecules. In the supramolecular structure of compound 1, each dimethyl ammonium cation is bridged between two polyoxovanadate clusters through hydrogen bonds and sulfate anions play a key role as the tetragonal supramolecular structure extends along these anions.

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