In the crystal structure of the title compound, {[Ni(C(4)H(2)O(4))(C(10)H(9)N(3))(H(2)O)(2)]·4H(2)O}(n), zigzag chains are built up from cis-[Ni(dpya)(H(2)O)(2)](2+) cations (dpya is di-2-pyridylamine) linked by bis-monodentate coordinated bridging fumarate ligands. The Ni(II) atom is coordinated by one chelating dpya ligand, two aqua ligands in trans positions and two monodentate fumarate liga...

can (Tscyclam) has been used to reduce the coordination power of cyclam; the crystal structure of [Ni(Tscyclam)(H20)2]CIZ shows that the Ni-N (amide) distance is 0.3 A longer than the Ni-N (amine) distances [l]. On the other hand, the effects mentioned above may increase the acidity of the amidic hydrogen so that the amides could become anions in basic solution; the latter are good udonors. Thu...

The title compound, [Cu(C(12)H(13)BrNO)(2)], was prepared by the reaction of 5-bromo-salicylaldehyde, cyclo-pentyl-amine and copper(II) acetate in an ethanol solution. The Cu(II) atom lies on an inversion center and is four-coordinated in a square-planar geometry by two N and two O atoms from two 4-bromo-2-(cyclo-pentyl-imino-meth-yl)phenolate Schiff base ligands.

In the mononuclear title compound, [Zn(NCS)(2)(C(7)H(16)N(2))], the Zn(II) atom is four-coordinated by two N atoms of the chelating 2-(piperidin-1-yl)ethyl-amine ligand and two N atoms from two thio-cyanate ligands in a distorted tetra-hedral geometry. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯S hydrogen bonds, forming chains along the b axis.

Anionic NHC ligands recently developed in our group, derived from N-iminoimidazolium ylides, were used to synthesize NHC-iridium(III) complexes. Their catalytic activities evaluated the amine alkylation of anilines using borrowing hydrogen catalysis. The high-yielding synthesis a small library complexes allowed rapid screening ideal steric bulk unit and basicity anionic tether for investigated ...

Half-sandwich iridium complexes bearing bidentate urea-phosphorus ligands were found to catalyze the direct reductive amination of aromatic and aliphatic ketones under mild conditions at 0.5 mol % loading with high selectivity towards primary amines. One was be active in both Leuckart–Wallach (NH4CO2H) type reaction as well hydrogenative (H2/NH4AcO) amination. The protocol ammonium formate does...

Herein, new substituted ligands based on pyrazole (L1–L4) were synthesized via a one-step by condensing (1H-pyrazole-1-yl) methanol with different primary amine compounds. The present work utilized the catalytic properties of in situ complexes formed these various copper (II) salts viz. Cu(CH3COO)2, CuSO4, CuCl2, and Cu(NO3)2 for oxidation catechol to o-quinone. studies showed that activities d...

A series of rhenium complexes bearing a pyridine-based PNP-type pincer ligand are synthesized from phosphine as precursors. dinitrogen-bridged dirhenium complex the ligands catalytically converts dinitrogen into ammonia during reaction with KC8 reductant and [HPCy3]BArF4 (Cy=cyclohexyl, ArF=3,5-(CF3)2C6H3) proton source at ?78 °C to afford 8.4 equiv based on atom catalyst. The rhenium-dinitroge...

A method for preparation of a new stable Cu(I) catalyst supported on weakly acidic polyacrylate resin without additional stabilizing ligands is described. A simple and efficient methodology for Ullmann Cu(I) catalyzed C-N cross coupling reactions using this original catalyst is reported. Coupling reactions of 4-chloropyridinium chloride with anilines containing electron donating (EDG) or electr...

The complete dinuclear mol-ecule of the title complex, [Cu(2)(CH(3)COO)(4)(C(12)H(12)N(2))(2)], is generated by a centre of inversion. The Cu(II) atoms are connected [Cu-Cu = 2.6329 (16) Å] and bridged by four acetate ligands. The distorted octa-hedral coordination geometry is completed by a terminal pyridine N atom. The amine H atom forms an intra-molecular N-H⋯O hydrogen bond.