Experiments are described which show that anaphylactic shock can be induced in animals sensitized with azoproteins by injecting them with azodyes containing the same azo components as the sensitizing antigen. The anaphylactic reactions are specific and occur with quantities of the dyes as small as fractions of milligrams.

A series of novel benzene centered mono-, bis- and tris-1,3,5-triazapentadiene ligands was synthesized and investigated with respect to their reactivity towards triphenylborane. The resulting blue-fluorescent boron complexes with a six-membered ring chelate structure show excellent thermal and chemical stability. All title compounds were completely characterized including X-ray diffraction stud...

A set of bimetallic complexes based on iridium and rhodium with bis(diphenylphosphino)methane, bis(di-iso-propylphosphino)methane, diphenyl-2-pyridylphosphine 2-(di-iso-propylphosphino)imidazole bridging ligands was prepared. The were characterized by NMR IR spectroscopy studied quantum-chemically using DFT methods. systems succeeded in catalytic hydrodefluorination reactions lower fluorinated ...

We describe here a short and efficient synthetic route for incorporating terpyridine based metal complexes at the 3'-extremity of both single and bis-oligonucleotide (bis-ODN) stretches to form novel metal complex-ODN conjugates. All single stranded mono and bis-ODN tethered metal complexes and the respective duplex ODNs were characterized by circular dichroism spectroscopy and UV-Vis melting e...

A series of enantiomerically pure mono- and bis-aryl tert-butyl sulfoxides were synthesised to promote the enantioselective allylation of aldehydes with allyltrichlorosilane. Moderate to good yields and modest to high enantioselectivities were achieved. The absence of nonlinear effect, spacer effect, promoter loading and concentration effect indicate that only one molecule of aryl tert-butyl su...

The new flexible spacer ligand 1,3-bis(4-pyridyl)propane-N,N'-dioxide forms three classes of isomorphous compounds with metal(iI) thiocyanates at controlled ligand-metal molar ratios, and its mu3-O,O,O' mode leads to a pair of coordination networks having the same (4, 4) topological characteristics but different mono- and di-nuclear nodes.