In the centrosymmetric mononuclear title complex, [Ni(NCS)(2)(C(11)H(11)N(3)O)(4)], the Ni(II) atom, located on an inversion centre, is hexa-coordinated in a distorted octa-hedral geometry comprising four N atoms of four monodentate 1-phenyl-3-(1H-1,2,4-triazol-1-yl)propan-1-one ligands and two N atoms from thio-cyanate anions.

In this research at the first complexes were optimized. NBO calculations and NMR for the complexes were carried out at the B3LYP/6-31G*quantum chemistry level. Different parameters such as energy levels, the amount of Chemical Shift in different atoms, the amount of HOMO/LUMO, chemical potential (µ ), chemical hardness (η), Formazan dyes have become important reactive dyes for cotton. Formazan ...

The asymmetric unit of title complex, [Cu(C(20)H(13)BrN(2)O(2))(C(5)H(5)N)], contains two independent mol-ecules. In each mol-ecule, the central Cu(II) atom has a square-planar environment formed by the tridentate hydrazone and the monodentate pyridine ligands, with the N atoms in a trans arrangement about the Cu(II) atom.

The title complex, [Ni(C(15)H(10)BrClN(2)O(2))(C(5)H(5)N)], displays a square-planar coordination geometry around the Ni(II) ion, formed by the tridentate hydrazone and monodentate pyridine ligands, with the N atoms in a trans arrangement about the Ni center.

The title complex, [CoNa(CO5P)(H2O)5]n, was obtained by reacting sodium phosphono-formate with cobalt nitrate. The complex contains cobalt(II) and sodium ions, which are bridged by the O atoms of two aqua ligands. The Co(II) ion is octahedrally coordinated by three phosphonoformato ligands (one bi- and the other monodentate) and by two O atoms from the bridging aqua ligands. The sodium cation i...

In the centrosymmetric mononuclear title complex, [Ni(NO(3))(2)(C(11)H(17)N(4)O(2))(2)], the Ni(II) atom displays a distorted octa-hedral coordination geometry and is six-coordinated by two N,O-bidentate nitronyl nitroxide radical ligands and two monodentate nitrate anions.

The asymmetric unit of title complex, [Ni(C(20)H(12)BrClN(2)O(2))(C(5)H(5)N)], contains one complex with the central Ni atom in a slightly distorted square-planar environment, formed by the tridentate hydrazone and the monodentate pyridine ligands, with N atoms in a trans arrangement about the Ni atom.

In the title compound, [Pd(NO(3))(2)(C(10)H(17)NO)(2)], the Pd(II) centre is located on an inversion center and is coordinated in a square-planar geometry by two O atoms of the monodentate nitrate groups and two carbonyl O atoms of the 1-cyclo-hexyl-pyrrolidin-2-one ligands.

The asymmetric unit of title complex, [Ni(C(20)H(13)BrN(2)O(2))(C(5)H(5)N)], contains two independent mol-ecules. In each mol-ecule, the central Ni(II) atom has a square-planar environment, formed by the tridentate hydrazone and the monodentate pyridine ligands, with the N atoms in a trans arrangement about the Ni(II) atom.

[reaction: see text] Monodentate phosphoramidites, in particular PipPhos and its octahydro analogue, are excellent ligands for the rhodium-catalyzed asymmetric hydrogenation of aromatic enol acetates, enol carbamates, and 2-dienol carbamates up to 98% ee. These latter substrates were hydrogenated selectively to the carbamates of the allyl alcohol.