Near-IR absorption due to supramolecular electronic interaction in an extended 3D hydrogen-bonding network material: synthesis, crystal structure and properties of [4,4′-H2bpy][Cu(mnt)2]

N–H···S Hydrogen Bonds in a New Family of Ion‐Pair Complexes Between Cationic Nickel Tetraazabicyclononane and Anionic Metal Dithiolates: Synthesis, Characterization and Properties of [Ni(C9H22N6)][M(mnt)2](MII = Cu, Ni, Pd)

“…This is considerably longer than the average N-C bond lengths (1.445 ± 0.004 Å) observed for the other six bonds from N(9) and N(10) to their immediate carbon atoms. The lengthening of these N-C bonds is consistent with the fact that N(7) and N(8) are coordinated to the nickel ion and N (9) and N (10) II macrocyclic complexes, [16][17][18][19] including the tetraazabicyclononane-Ni The anion [Cu(mnt) 2 ] 2-has a planar structure, in good agreement with other relevant literature data. [20] The anion (A) and the cation (C) are arranged face to face, forming a mixed-stacked CC-AA-CC-AA-type arrangement along the crystallographic a axis ( Figure 3).…”

“…[10][11][12] In many cases, N-H···S hydrogen bonds play important roles, for example, the arrangement of proteins having amide and amine functional groups around Fe-S clusters in Pasteurella aerogenes ferredoxin and Clostridium pasteurianum rubredoxin has been suggested to contribute to the stabilization of the negatively charged cluster by providing possible hydrogen-bond donors in forming N-H···S hydrogen bonds. [11] The N-H···S bonds involving the amine nitrogen atoms of the cation [Ni(C 9 Figure 4; the geometrical parameters of these hydrogen bonds are presented in Table 2. As shown in Figure 4, the cation interacts with two different anions through three N-H···S hydrogen bonds (two H-bonds with one anion and one H-bond with another anion).…”

“…We have recently reported the NIR absorption due to a supramolecular electronic interaction between an anion and cation in a three-dimensional hydrogen-bonded networking material, namely [4,4Ј-H 2 bpy][Cu(mnt) 2 ], emphasizing the N-H···N-type hydrogen bonding between cation and anion. [9] Now we extend this study to an inorganic transition metal complex, NiL In this group of ion-pair complexes the nickel complex cation has coordinated NH 2 groups. The aim of this work was to examine whether these amine hydrogens form N-H···S-type hydrogen bonds with the thiolate sulfur of the mnt ligands of the anions.…”

Self-assembly of physically crosslinked micelles of poly(2-acrylamido-2-methyl-1-propane sulphonic acid-co-isodecyl methacrylate)-copper(II) complexes

“…Therefore, the selection of the ligands is crucial for assembly of metal ions and ligands in coordination polymers. The basis of molecular assembly is the meaningful and organized connections between molecular structures by means of covalent bonds, hydrogen bonds, p-p interaction and their combination [4]. The nature of assembly of metal-polymers is highly influenced by a number of factors, such as the coordination ability of metal ions, the structural characterization of organic ligands, solvent system, temperature, pH of the solution, ratio of metal to ligand and counter ions [5,6].…”

A radical ion-pair complex exhibiting strong C–H…O H-bonding interaction, moderately broaden near-IR absorbance and complicated EPR spectrum

“…The ion-paircharge-transfer transition (IPCT) salt formations of [M(mnt) 2 ] n− (M = transition metal ion, mnt 2− = maleonitriledithiolate) with a variety of acceptor-type counter-ions have been widely studied [11,12], some of which show intense IPCT absorbance in near-IR region [13,14].…”