Azonanes were prepared by a palladium-catalyzed (5 + 4) cycloaddition between activated vinylcyclopropanes and 1-azadienes. During this process, the vinylcyclopropane partner displayed an unusual reactivity behaved as all-carbon 1,5-dipole. A N,N-bidentate ligand was required to inhibit formation of thermodynamic (3 2) cycloadducts.

We report the formation of a tetrapallada-macrocycle induced by an unusual transmetallation, in which an anionic bidentate chelate ligand is replaced by a phenyl ligand from phenylboronic acid, leaving the chloride ligands intact.

A new family of "RuCp" (Cp=η(5)-C(5)H(5)) derivatives with bidentate N,O and N,N'-heteroaromatic ligands revealed outstanding cytotoxic properties against several human cell lines namely, A2780, A2780CisR, HT29, MCF7, MDAMB231, and PC3. IC(50) values were much lower than those found for cisplatin. Crystal structure of compound 4 was determined by X-ray diffraction studies. Density functional th...

In the monomeric title complex, [Co(C6H8O4)(C10H9N3)(H2O)2]·3H2O, the distorted octa-hedral CoN2O4 coordination environment comprises two N-atom donors from the bidentate di-pyridyldi-amine ligand, two O-atom donors from one of the carboxyl-ate groups of the bidentate chelating adipate ligand and two water mol-ecules. In addition, there are three solvent water mol-ecules which are involved in b...

Some new complexes of thiacetazone (Thz) and quinalizarin (Qz) with Mn(II), Fe(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Pb(II) were prepared. The ligands and their metal complexes were characterized by phisco-chemical spectroscopic techniques. The spectral data suggested that the thiacetazone as a neutral bidentate ligand is coordinated with the metal ions through the N and S atoms. The ...

In the title compound, [Rh(C10H9O2)(CO)2], a distorted square-planar coordination geometry is observed around the Rh(I) atom, formed by the O atoms of the bidentate ligand and two C atoms from the carbonyl ligands. The Rh(I) atom is displaced from the plane through the surrounding atoms by 0.017 Å. In the crystal, C-H⋯O inter-action is observed between a methyl group of the bidentate ligand and...

The title complex, [Nd(C(15)H(11)O(2))(NO(3))(2)(C(18)H(15)N(3)O)]·CH(3)CN or [Nd(altpy)(dbm)(NO(3))(2)]·CH(3)CN (altpy = 4'-all-yl-oxy-2,2':6',2''-terpyridine, dbm = dibenzoyl-methanide anion), has been synthesized from 4'-all-yloxy-2,2':6',2''-terpyridine, dibenzoyl-methanate and neodymium nitrate. The Nd(3+) atom is nine-coordinated by two O atoms from the bidentate dbm ligand, three N atoms...

The authors use an environmental friendly, solvent-free method to prepare metal (II) complexes of cloxacillin and determine the activity complexes. are more active against bacteria isolates than free cloxacillin. spectral studies showed (ligand) as monobasic bidentate material that form a complex with ion through carbonyl amide carboxylate groups carboxylic acid, microanalysis results prove lig...

The asymmetric unit of the title compound, [Cu(C(4)H(8)NO(3))(C(12)H(8)N(2))(H(2)O)]Cl·2H(2)O, contains a complex cation, a chloride anion and two water mol-ecules. The Cu(II) ion has a distorted square-pyramidal coordination geometry formed by one bidentate phenanthroline ligand, one O,N-bidentate dl-threoninate ligand and one apical water mol-ecule. In the crystal structure, inter-molecular O...

In the title complex, [Ir(C(17)H(13)N(2))(2)(C(5)H(7)O(2))], the Ir(III) atom is hexa-coordinated in a distorted octa-hedral geometry by two C,N-bidentate 2-(5-methyl-3-phenyl-pyrazin-2-yl)phenyl (mdpp) ligands and one O,O-bidentate acetyl-acetonate ligand. The dihedral angles between the phenyl rings and the pyrazine ring are 9.56 (14) and 58.99 (14)° for one mdpp ligand and 9.34 (14) and 79.9...