Syntheses and Structures of Mononuclear, Dinuclear and Polynuclear Silver(I) Complexes of 2-Pyrazole-Substituted 1,10-Phenanthroline Ligands

Abstract

A series of mononuclear, dinuclear and polynuclear silver(I) complexes (1−6) bearing 2-pyrazolesubstituted 1,10-phenanthroline derivatives (L 1 , F L 1 , L 2 ) have been synthesized and characterized by 1 H and 13 C NMR, IR spectroscopy, elemental analysis, and single crystal X-ray diffraction. Reaction ofAg separation: 3.059(1) Å), as well as a dinuclear complex [Ag 2 (ClO 4 ) 2 (L 1 ) 2 ] (4) in which the perchlorate anions instead of solvents are involved in the metal coordination, have also been obtained. The mononuclear complex [Ag( F L 1 ) 2 ](BF 4 ) (5) was synthesized from F L 1 ( F L 1 = 2-(3,5-bis(trifluoromethyl)pyrazol-1-yl)-1,10phenanthroline) and AgBF 4 , while the dinuclear [Ag 2 (BF 4 ) 2 (L 2 ) 2 ] (6) was isolated from L 2 (L 2 = 2-[N-(3-methyl-5phenylpyrazole)]-1,10-phenanthroline). The photoluminescence properties of the ligands and complexes 1−6 have been studied both in the solid state and in solution.

Tunable Supramolecular Nanoarchitectures Constructed by the Complexation of Diphenanthro‐24‐Crown‐8/Cesium(I) with Nickel(II) and Silver(I) Ions

“…The emission also quenched which could be attributed to the heavy atom effect of Ag + (Figure f). The binding constant (K S ) was determined as 7.87×10 6 M −1 (Figure S6c,d) . 1 H NMR gave weaken and broaden signal (Figure S2).…”

“…The binding constant (K S ) was determined as 7.87 × 10 6 M À 1 (Figure S6c,d). [10] 1 H NMR gave weaken and broaden signal (Figure S2). All these data indicated that DPC bound with Ag + in the phenanthroline motif.…”

Synthesis, DNA-binding, Photocleavage and in vitro Cytotoxicity of Novel Imidazole[4,5-f][1,10]phenanthroline-based Oxovanadium Complexes

“…268 nm assignable to π-π* transition of aromatic rings of phenanthrolinebased ligands [35][36] . The remaining bands in the UV-vis region (320-330 nm) are attributed to intraligand transitions of the Schiff base.…”

1H‐Pyrazole‐Appended Pyridines and Their 1,2,4‐Triazine Precursors: A Rational Synthesis and in silico and in vitro Evaluation of Anti‐Cancer Activity

“…In addition, pyrazole-pyridine hybrid molecules were used as ligands for transition metal cations, and some of the obtained complexes were reported to exhibit promising luminescent properties, [10,11] as well as catalytic activity. For instance, some pyrazole-bipyridine metal chelates were reported as promising catalysts for the epoxidation reactions (in case of Ru-complexes [12] ), or catalysts for 1,3-butadiene polymerization reaction (in case of Co-complexes [13] ).…”