The 1:2 reaction of [μ-(dmpm)Pt(nbe)]2 (dmpm=bis(dimethylphosphino)methane, nbe=norbornene) with Cl2BNR(SiMe3) (R=tBu, SiMe3) yields unsymmetrical (N-aminoboryl)aminoboryl PtI2 complexes by B−N coupling via ClSiMe3 elimination. A subsequent intramolecular elimination from the tBu-derivative leads to cyclization BNBN unit, forming a unique 1,3,2,4-diazadiboretidin-2-yl ligand. In contrast, analo...

The equations of unsymmetrical 2-phase induction motors are established and a computer representation is developed from these equations. Computer representation of single phase motors are developed by extension and modification of the unsymmetrical 2-phase induction motors representation. These equations of an unsymmetrical 2-phase induction motors are describe the dynamic performance of equati...

The synthesis and characterization of new meso-substituted and -substituted unsymmetrical metallorphyrins has been described. A new modified Alder method was used for the synthesis of unsymmetrical porphyrins. Reaction of these unsymmetrical porphyrins with metal chlorides and nitrates afforded the corresponding metalloporphyrins in high yields with excellent purity. These porphyrins and their...

Synthetic, structural and biological aspects of tetraazamacrocyclic complexes of Tin(II) have been described. The complexes were characterized by elemental analysis, molecular weight determination conductance measurements and electronic, infrared, H,C and Sn NMR spectral studies. Ligand and their unsymmetrical complexes have been tested for their antimicrobial effects on several pathogenic fung...

Highly selective C(sp²)-C(sp²) cross-coupling of dihalogenated hydrocarbons comprising C(sp²)-Br and C(sp³)-Cl bonds with arylboronic acids is reported. This highly selective coupling reaction of the C(sp²)-Br bond is successfully achieved using Pd(OAc)₂ and PCy₃·HBF₄ as the palladium source and ligand, respectively. A series of chloromethyl-1,1'-biphenyl compounds are obtained in moderate-to-e...

A new concept for generation of chelating ligand libraries for homogeneous metal complex catalysis based on self-assembly is presented. Thus, self-assembly of structurally simple monodentate ligands in order to give structurally more complex bidentate ligands is achieved employing hydrogen bonding. Based on this concept and on the 2-pyridone/hydroxypyridine tautomeric system, a new rhodium cata...