Tetranuclear Copper(II) Complexes Derived from 5-Bromo-2-((2-(2-hydroxyethylamino)ethylimino)methyl)phenol: Synthesis, Characterization, Crystal Structures and Catalytic Oxidation of Olefins.

An acetate bridged tetranuclear copper(II) complex, [Cu4L2(μ2-η1:η1-CH3COO)6(CH3OH)2] (1), and a chloride, phenolate and azide co-bridged tetranuclear copper(II) complex, [Cu4L2Cl2(μ-Cl)2(μ1,1-N3)2]2CH3OH (2), where L is the deprotonated form of the Schiff base 5-bromo-2-((2-(2-hydroxyethylamino)ethylimino)methyl)phenol (HL), have been synthesized and characterized by elemental analysis, IR and UV spectra, and single crystal X-ray diffraction. Single crystal X-ray analysis revealed that the Cu atoms in both complexes are in square pyramidal geometry. In complex 1, two [CuL] units and [Cu2(μ2-η1:η1-CH3COO)4] core are linked through two acetate ligands.

Synthesis and characterization of triphenylphosphine adducts of ferrocene-based palladacycles and their performance in the Suzuki and Sonogashira reactions with bromo- and chloroarenes.

A new triphenylphosphine adduct of cyclopalladated ferrocenylpyridazine containing a chloride anion, 2a, has been synthesized from the reaction of the chloride-bridged palladacyclic dimer 1a with triphenylphosphine. The corresponding adducts 3a,b containing iodide anion have been readily prepared through anion exchange reactions of 2a,b with NaI in acetone. These complexes were characterized by elemental analysis, IR and 1H-NMR.

N-(9H-Fluoren-9-yl-idene)-4-methyl-aniline.

In the title compound, C(20)H(15)N, the fluorene unit is essentially planar [r.m.s.

Chlorido[(E)-2-hydr-oxy-6-(isonicotinoyl-hydrazonometh-yl)phen-yl]mercury(II) monohydrate.

The asymmetric unit of the title compound, [Hg(C(13)H(10)N(3)O(2))Cl]·H(2)O, contains two independent mercury(II) complexes with slightly different conformations, related via a pseudo-inversion centre, and two water mol-ecules. The Hg(II) atoms show a typical linear geometry to a C atom of the benzene ring and to a Cl atom. A benzene C and the azomethine N atom chelate the Hg(II) atoms with weak intra-molecular Hg⋯N bonding distances of 2.