A new 1-hydrazinodiene (1) has been developed and utilized in Lewis acid catalyzed, intermolecular Diels-Alder reactions with various electron-deficient alkenes. The hydrazine can then be deprotected, and a molecule of methanesulfinic acid is eliminated to provide a putative diazene intermediate (4), which then spontaneously undergoes a suprafacial 1,5-sigmatropic shift to yield stereochemicall...

A novel photoactive complex was constructed from two non-photoactive ligands and cobalt (II) ions. Upon ultra violet (UV) irradiation (365 nm), the color of complex 1 changes from orange to violet. The ESR spectrum indicates that the photoactive phenomenon of complex 1 originates from an intermolecular energy transfer between the H5DDCPBA ligand and phenanthroline ligand. This photoactive compl...

The number of molecules constituting 1D intermolecular aggregates of the π-stacked self-assembled complex was controlled by altering the concentration and temperature. Enhanced magnetic orientation was observed for the aggregates with larger aggregation numbers. It was demonstrated that the designable complex aggregates serve as magnetic aligners to induce magnetic alignment upon an analyte pro...

Intermolecular features in atomic force microscopy images of organic molecules have been ascribed to intermolecular bonds. A recent theoretical study [P. Hapala et al., Phys. Rev. B 90, 085421 (2014)] showed that these features can also be explained by the flexibility of molecule-terminated tips. We probe this effect by carrying out atomic force microscopy experiments on a model system that con...

Mixed Langmuir monolayers and Langmuir-Schaefer (LS) films containing the cationic metallosurfactant bis(2-phenylpyridine)(4,4'-diheptadecyl-2,2'-bipyridine)-iridium(III) chloride (Ir-complex) and the anionic tetrakis(4-sulfonatophenyl)porphyrin (TSPP) in 4:1 molar ratio have been successfully prepared by the co-spreading method at the air-water interface. The presence of both luminescent speci...

The existing theoretical approaches to protein-protein recognition concentrate on the details of the molecular surface at atomic resolution, while a possible role of the main chain in complex formation has been largely unexplored. To address this problem, we represented the molecules by C alpha atoms and applied the step-function potentials for intermolecular energy calculations. Since our goal...

a quantum chemical investigation was carried out to study the properties of intermolecular f•••f, br•••br and br•••o interactions in crystalline 1-bromo-2,3,5,6-tetrafluoro-nitrobenzene (bfnb). this system was selected to mimic the halogen-halogen as well as halogen bonding interactions found within crystal structures as well as within biological systems. we found that fluorine atoms have weak ...

The intermolecular (outer sphere, OS) interaction of a reducing and an oxidizing metal complex generates a new optical transition involving charge transfer (CT) from the electron donor to the acceptor. OS C T transitions are classified according to the redox site (metal or ligand). Generally, the interaction between donor and acceptor is facilitated by ion pairs consisting of an oxidizing compl...

The enantioselective intermolecular gold(I)-catalyzed [2+2] cycloaddition of terminal alkynes and alkenes has been achieved using non-C2-chiral Josiphos digold(I) complexes as catalysts, by the formation of the monocationic complex. This new approach has been applied to the enantioselective total synthesis of rumphellaone A.

In the structure of the title complex, [Zn(C8H14N6S2)(C5H5N)], the Zn(II) ion has a pseudo-square-pyramidal coordination environment and is displaced by 0.490 Å from the plane of best fit defined by the bis-(thio-semicarbazonate) N2S2 donor atoms. Chains sustained by intermolecular N-H⋯N and N-H⋯S hydrogen-bonding interactions extend parallel to [10-1].