Structure of Ni(II) Inclusion Complex in Solid/Solution States and the Enhancement of Catalytic Behavior in Electrochemical Hydrogen Production.

In this article, we investigate the encapsulation of K[Ni(maleonitriledithiolate)] () within a host molecule, β-cyclodextrin (β-CD), via single-crystal X-ray analysis. An inclusion complex, K{[Ni(maleonitriledithiolate)]@(β-CD)} (), was constructed from and two β-CDs. The anion guest Ni complex included a host cavity, constructed using two β-CDs, and the Ni atom of the anion was located between the two hydrophilic primary rims.

The structure and modified properties of a self-dimerised Cu(II) inclusion complex in γ-cyclodextrins.

Inclusion structures incorporating more than one guest molecule are elusive because confinement alters their molecular properties. We report the solid-state characterization of an inclusion complex comprising two γ-cyclodextrins and two [Cu(2-pyridinemethanolate)(2-pyridinemethanol)]PF units. Quantum calculation reveals that occurs.

pH-Dependent structural diversity of a 2-pyridinemethanol Cu complex and its relatively strong magnetic exchange coupling via hydrogen bonding.

The diversity of the self-assembled structures of a Cu complex via hydrogen bonding, including a square planar unit, is reported. The Cu complex forms two self-assembled structures by hydrogen bonding, depending on the acidity of the recrystallization conditions. A linear chain structure can be produced under acidic conditions, and a three-dimensional network structure is observed under basic conditions.

Crystal structure of bis-(1,10-phenanthroline-κ,')(1,3-thia-zole-2-thiol-ato-κ,)nickel(II) hexa-fluorido-phosphate 1,4-dioxane sesquisolvate.

The title salt, [Ni(CHNS)(CHN)]PF·1.5CHO, was the unexpected product on making an attempt to prepare an [Ni(2-mercapto-thia-zol-ate)(1,10-phenanthroline)] complex by reaction of [NiCl(1,10-phen-an-throline)] with 2-mercapto-thia-zolate. In the resulting complex, the 2-mercapto-thia-zolate anion acts as a chelating ligand, which coordinates to the Ni ion with the thia-zolyl N and thiol-ate S atoms.

Structural transformations of layered structures constructed from Cu(ii)-chloranilate monomer compounds.

Hydrogen-bond supported intercalation compounds constructed from three types of two-dimensional layers and common guests, {(Hha)[Cu(CA)(EtOH)]} (1), {(Hha)[Cu(CA)(EtOH)]} (2), and {(Hha)[Cu(CA)]} (3) (ha = hexylamine), have been synthesized and characterized. The hexylaminium cations are introduced between the anionic layers of the metal-chloranilate by not only electrostatic interactions but also hydrogen bonding interactions. These compounds show reversible EtOH adsorption and desorption accompanied by a structural transformation.

Competing ferro- and antiferromagnetic interactions in a hexagonal bipyramidal nickel thiolate cluster.

A new hexagonal bipyramidal Ni8 cluster is reported and its magnetic behaviour is analyzed. The molecular structure consists of a hexagonal wheel capped by two additional apical Ni(2+) ions. This structure supports ferromagnetic superexchange interactions between adjacent Ni(2+) ions in the wheel and an antiferromagnetic superexchange interaction between the wheel and apical Ni(2+) ions.

Bis[(5-bromo-pyridin-2-yl)methano-lato-κ(2) N,O]copper(II) monohydrate.

In the title compound, [Cu(C6H5BrNO)2]·H2O, the Cu(II) ion has a square-planer N2O2 coordination environment. Slipped π-π stackings [centroid-centroid distances: 3.625 (3), 3.

Tris(pyridin-2-yl-methanol)nickel(II) hexa-fluoridophosphate trifluoro-acetate.

In the crystal structure of the title complex, [Ni(C(6)H(7)NO)(3)](PF(6))(C(2)F(3)O(2)), the Ni(II) ion is in a slightly distorted octa-hedral NiO(3)N(3) coordination geometry with each of the three N and three O atoms in a meridional coordination. In the crystal, the complex mol-ecules and the trifluoro-acetate anions are connected via O-H⋯O hydrogen bonding into layers parallel to the ab plane.

Bis(2,2'-bipyridine)(pyridin-2-olato)ruthenium(II) hexa-fluorido-phosphate benzene hemisolvate.

In the title compound, [Ru(C(5)H(4)NO)(C(10)H(8)N(2))(2)]PF(6)·0.5C(6)H(6), the Ru(2+) cation has a distorted octa-hedral RuN(5)O coordination environment. This complex is more distorted than the closely related ruthenium complex containing a pyridine-2-thiol-ate ligand [Santra et al.

Novel 2-mercaptopyridine-ruthenium complex exhibiting electrochemically induced linkage isomerization switched on/off by protolysis.

A ruthenium complex [ruthenium bis(2,2'-bipyridine)(2-mercaptopyridine)(pyridine)](PF6)2 was crystallographically characterized from its deprotonated form and was electrochemically investigated. In the deprotonated complex, the 2-mercaptopyridine ligand coordinates to the Ru atom only by the S atom; therefore, the N atom of the 2-mercaptopyridine ligand can be protonated. In a CH3CN solution, the complex shows a reversible redox couple attributed to RuIII/II-S.