Synthesis, crystal structure and luminescent properties of a novel cadmium coordination polymer with unprecedented one-dimensional hetero-triple-stranded chain

Anion-directed assembly of two novel cadmium(II) complexes constructed by 2,2′-(1,4-butanediyl)bis(1H-benzimidazole) ligand

“…2. Each Cd(II) atom is located at the core of an unusual distorted tetrahedron coordination environment, which is different from the complex [Cd 1.5 (bbta) 1.5 (NCS) 3 ] n [15] with analogous organic ligand. In complex 2, each center Cd(II) atom is coordinated by three nitrogen atoms from three different HC4Bim À ligands with Cd-N distances being in the range 2.177(3)-2.238(3) Å and one nitrogen atom from terminal thiocyanate (NCS À ) group (Cd1-N5 = 2.178(3) Å ).…”

Synthesis, structure and luminescent properties of an organic–inorganic hybrid solid based on unprecedented flower-basket-shaped [] clusters with 1,2-bis(benzotriazole)ethane ligands

“…Recent investigations show that the application of polyazaheteroaromatic compounds as donor groups gives the possibility to tune the properties of the organic ligands by the careful selection of the polyazole donors or by the type and position of the substituent in the five-membered ring [15][16][17][18][19][20][21]. Among the flexible ligands based on other polyazaheteroaromatic such as imidazole [22], benzoimidazole [23] and triazole [24], the flexible benzotriazole ligands are relatively less studied [25]. To the best of our knowledge, no investigation has been carried out on the hydro(solvo)thermal synthesis of hybrid materials constructed from flexible benzotriazole ligands.…”

Synthesis, structures and luminescent properties of two silver supramolecular isomers with one-dimensional concavo-convex chain and dimer metallacycle

“…Our interest is to construction of the new supramolecules with the novel topologies and synthesis of new functional materials using the flexible bitriazole ligands such as 1,2-bis(1,2,4-triazol-1-yl)ethane [7], 1,2-bis(benzotriazol-1-yl)ethane [8] and 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene [9]. In the present work, we have synthesized two supramolecular isomers {[Ag(bbta)-(NO 3 )] AE H 2 O} n (1) and [Ag(bbta)(NO 3 )] 2 (2) in the different solvent systems using the flexible ligand 1,2-bis(benzotriazol-1-yl)ethane (bbta).…”

“…The distance of Ag(1)Á Á ÁAg(1C) is 15.734 Å . Furthermore, there are stable p-p interactions among benzotriaozle rings of adjacent chains [6b, 8,15]; these N(1) benzotriazole rings are parallel with the interplanar distances of 3.437 and 3.457 Å and these N(4) benzotriazole rings are parallel with the interplanar distances of 3.433 and 3.406 Å . The crystal structure of 2 [11] is made of neutral dimer metallacycles.…”

“…2, two silver(I) centers are connected by two bbta ligands, resulting in a discrete Ag 2 (bbta) 2 18-membered metallacycle which represents the smallest closed cyclic structure with a 1:1 metal-to-ligand ratio. Each silver(I) center in 2 is three-coordinated to two nitrogen donors of two bbta ligands (Ag (1) The AgÁ Á ÁAg distance in the one dimer is 7.267 Å , corresponding to the metal-to-metal distance (6.772 Å ) via the gauche conformation bbta ligands in [Cd 1.5 (bbta) 1.5 (NCS) 3 ] n [8], and obviously shorter than the values 11.154 and 11.153 Å in 1 through the anti conformation bbta ligands. There are also p-p interactions among benzotriaozle rings of adjacent dimers [6b, 8,15]; these N(1) benzotriazole rings are parallel with an interplanar distance of 3.457 Å and these N(4) benzotriazole rings are parallel with an interplanar distance of 3.324 Å .…”