Copper(II) complexes with monocarboxylate ligands bearing different substituent groups: Synthesis and spectroscopic studies

One-Dimensional Polymers Constructed with Paddle-Wheel Dinuclear Copper(II) Bridged by 4,4′-Bipyridine

“…ion is fivecoordinate showing a distorted square pyramidal CuNO 4 chromophore with the same s value of 0.17 for Cu1 and Both NAP -anions act as a bidentate bridge in syn,syng 1 :g 1 :l 2 coordinative mode bridging between Cu(II) centers forming a paddle-wheel SBU. The CuÁÁÁCu separation in each dinuclear unit is 2.6170(6) Å , it agrees well with those reported for dinuclear paddle-wheel units in the structures of Cu(II) carboxylate complexes [12][13][14][15][16][17]. The average C-O bond distances and O-C-O bond angles are 1.264 Å and 124.37°, respectively.…”

“…Among them, polynuclear copper cluster are of especial interest due to their attracting structures as well as their potential applications in molecule-based magnet, multielectron redox processes, and catalysis [11]. In past decades, paddle-wheel-like tetracarboxylate dicopper clusters [Cu 2 (RCOO) 4 ] where two copper ions are bridged by four carboxylate groups in the syn-syn mode have been widely studied [12][13][14][15]. The tetracarboxylate-bridged dicopper clusters have been found to be good candidates for SBU in the construction of rigid open metalorganic frameworks (MOFs) [16,17].…”

Hexamethylenetetramine: An old new building block for design of coordination polymers

“…The variable temperature magnetic susceptibility studies were undertaken for hmt-driven coordination polymers of Cu(II) (28,49,54), Co(II) (10,12,48,50), Ni(II) (8,11), Mn(II) (53) and Mn(II)/Mn(III) (27). Although bridging hmt moieties are capable of transmitting magnetic interactions, such couplings are typically very weak or even negligible in all the studied examples.…”

Syntheses, crystal structures and properties of complexes with two anthracene-based bulky backbone ligands

“…By contrast, anthracenebased bulky backbone ligands, such as phenylquinoline- [17,18] and anthraquinone-based carboxylic acids [19,20], have not yet been widely studied. Therefore, we have selected two anthracene-based bulky backbone ligands, 9,10-dioxo-9,10-dihydroanthracene-1,5-dicarboxylic acid (H 2 L 1 ) and 2-phenylquinoline-4-carboxylic acid (HL 2 ) (Fig.…”