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Carboxylato Ligands (carboxylato + ligand)
Selected AbstractsReactivity of Organoelement Subhalides of Gallium and Indium , Ga,Ga and In,In Bonds Bridged by Carboxylato LigandsEUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 5 2004Werner Uhl Abstract The organoelement subhalides R2Ga2I2 (5) and R3In3I2 [6; R = C(SiMe3)3] reacted with silver benzoate AgOOCC6H5 to yield the dicarboxylato dielement compounds R2E2(µ-OOCC6H5 - O,O,)2 (7, E = Ga; 8, E = In). Both compounds possess E,E single bonds bridged by the chelating carboxylato ligands. The chelating groups are arranged perpendicular to one another. Owing to the small bite of the carboxylato group very short E,E bond lengths of 240.5 pm (Ga,Ga) and 265.4 pm (In,In) were observed. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004) [source] Synthesis, Crystal Structure, and Magnetic Properties of Two Manganese(II) Polymers Bearing Ferrocenecarboxylato LigandsEUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 14 2007Zilu Chen Abstract Reactions of Mn(ClO4)2·6H2O with FcCO2Na [Fc = (,5 -C5H4)Fe(,5 -C5H5)] in methanol solution gave [Mn3(FcCO2)6(CH3OH)4]n (1), and, in the presence of 4,4,-bipyridine (4,4,-bpy), [Mn3(FcCO2)6(H2O)2(4,4,-bpy)]n (2). Both complexes have the similar chains with a sequence of ,Mn,(,2 -COO)n,Mn,(,2 -COO),Mn,(,2 -COO),Mn,(,2 -COO)n,Mn, (n = 4 and 2 for complex 1 and 2, respectively), which are constructed alternatively from mononuclear [MnII] units and dinuclear [Mn2(FcCO2)4] units by ,2 -ferrocenecarboxylato- O,O, bridging. The two MnII ions in the dinuclear [Mn2(FcCO2)4] units of complex 1 are connected by four ferrocenecarboxylato ligands to form a swastika-like shaped skeleton, which is rare in metallocenecarboxylato complexes. However, the two MnII ions in the dinuclear [Mn2(FcCO2)4] units of complex 2 are bridged only by two carboxylato ligands, and the other two ferrocenecarboxylato ligands in this unit bind in a chelating mode. The chains in complex 2 are further interconnected by the coordinated 4,4,-bipyridine molecules to form two-dimensional coordination sheets. Magnetic susceptibility measurements revealed a weak antiferromagnetic coupling for both complexes. A model Heisenberg chain comprising classical spins coupled through alternating exchange interactions J1,J1,J2 (AF1,AF1,AF2) is proposed to describe the magnetic behavior. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007) [source] Reactivity of Organoelement Subhalides of Gallium and Indium , Ga,Ga and In,In Bonds Bridged by Carboxylato LigandsEUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 5 2004Werner Uhl Abstract The organoelement subhalides R2Ga2I2 (5) and R3In3I2 [6; R = C(SiMe3)3] reacted with silver benzoate AgOOCC6H5 to yield the dicarboxylato dielement compounds R2E2(µ-OOCC6H5 - O,O,)2 (7, E = Ga; 8, E = In). Both compounds possess E,E single bonds bridged by the chelating carboxylato ligands. The chelating groups are arranged perpendicular to one another. Owing to the small bite of the carboxylato group very short E,E bond lengths of 240.5 pm (Ga,Ga) and 265.4 pm (In,In) were observed. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004) [source] Palladium(II) and platinum(II) complexes of (1R,2R)-(,)-1,2-diaminocyclohexane (DACH) with various carboxylato ligands and their cytotoxicity evaluationAPPLIED ORGANOMETALLIC CHEMISTRY, Issue 5 2009Talal A.K. Al-Allaf Abstract Several palladium(II) and platinum(II) complexes analogous to oxaliplatin, bearing the enantiomerically pure (1R,2R)-(,)-1,2-diaminocyclohexane (DACH) ligand, of the general formula {MX2[(1R,2R)-DACH]}, where M = Pd or Pt, X (COO)2, CH2(COO)2, , , {1,1,-C5H8(CH2COO)2}, [1,1,-C6H10(CH2COO)2], [1,1,-(COO)2ferrocene], , , , MeCOO and Me3CCOO, were synthesized. All the complexes prepared were characterized physicochemically and spectroscopically. Some selected complexes were screened in vitro against several tumor cell lines and the results were compared with reference standard drug, oxaliplatin. Copyright © 2009 John Wiley & Sons, Ltd. [source] | ||||||||||