Search

A neutral complex PN3P-Rh(i)Cl (2) was prepared from a reaction of the PN3P pincer ligand (1) with [Rh(COD)Cl]2 (COD = 1,5-cyclooctadiene). Upon treatment with a suitable base, H–H and Csp2–H activation reactions can be achieved through the deprotonation/reprotonation of one of the N–H arms and dearomatization/rearomatization of the central pyridine ring with the oxidation state of Rh remaining i. [ABSTRACT FROM AUTHOR]

Methylenediisophthalic acid (H4MDIP), as semi-rigid ‘V’-shaped carboxylate ligands, react with CoO, NiO and Cu(NO3)2·3H2O to give three novel coordination polymers [H3O]2[Co3(MDIP)2]·2DMF (1), [Ni2(HMDIP)(μ2-OH)(H2O)3(DMF)]·4H2O·DMF (2) and [Cu3(MDIP)(μ2-OH)2(H2O)4]·6.5H2O (3) (DMF = N,N′-dimethylformamide). All compounds have been characterized by thermogravimetric analysis, IR spectroscopy, elemental and single-crystal X-ray diffraction analyses. Complex 1is an unusual open anionic framework that is defined as the metal–organic replica of fluorite. Both 2and 3features a 3D open framework with one-dimensional elliptical channels and R- and L-helical chains, and their resulting frameworks can be rationalized as crband ptstopology respectively. An interesting feature of complex 3is the presence of the linear Cu3units that is formed by carboxylate and μ2-hydroxyl groups linking three Cu(ii) metal centers. Magnetic investigations indicate that ferromagnetic couplings are dominant in the three compounds. [ABSTRACT FROM AUTHOR]

A neutral complex PN(3)P-Rh(I)Cl (2) was prepared from a reaction of the PN(3)P pincer ligand (1) with [Rh(COD)Cl]2 (COD = 1,5-cyclooctadiene). Upon treatment with a suitable base, H-H and C(sp(2))-H activation reactions can be achieved through the deprotonation/reprotonation of one of the N-H arms and dearomatization/rearomatization of the central pyridine ring with the oxidation state of Rh remaining I.

Methylenediisophthalic acid (H(4)MDIP), as semi-rigid 'V'-shaped carboxylate ligands, react with CoO, NiO and Cu(NO(3))(2)·3H(2)O to give three novel coordination polymers [H(3)O](2)[Co(3)(MDIP)(2)]·2DMF (1), [Ni(2)(HMDIP)(μ(2)-OH)(H(2)O)(3)(DMF)]·4H(2)O·DMF (2) and [Cu(3)(MDIP)(μ(2)-OH)(2)(H(2)O)(4)]·6.5H(2)O (3) (DMF = N,N'-dimethylformamide). All compounds have been characterized by thermogravimetric analysis, IR spectroscopy, elemental and single-crystal X-ray diffraction analyses. Complex 1 is an unusual open anionic framework that is defined as the metal-organic replica of fluorite. Both 2 and 3 features a 3D open framework with one-dimensional elliptical channels and R- and L-helical chains, and their resulting frameworks can be rationalized as crb and pts topology respectively. An interesting feature of complex 3 is the presence of the linear Cu(3) units that is formed by carboxylate and μ(2)-hydroxyl groups linking three Cu(II) metal centers. Magnetic investigations indicate that ferromagnetic couplings are dominant in the three compounds.