Benign synthesis of carboxamide ligands, H2Me2bqb and H2Me2bpb. Preparation, characterization and electrochemistry of Ni(II) complexes: The crystal structure of [NiII(Me2bqb)]

Synthesis, characterization and X-ray crystal structure of copper(I) complexes of the 2-(2-quinolyl)benzothiazole ligand. Electrochemical and antibacterial studies

“…Formation of amides has also been documented in our previous work on the synthesis of related compounds [36][37][38]. The thiol group could in turn attack the CO group to give the cyclization product.…”

Mononuclear nickel and copper complexes with indolecarboxamide ligands: Synthesis, properties and electrochemistry

“…The observed M 3+/2+ redox potentials (E 1 ) for the complexes 7-11 in this work are much on lower side compared to other nickel and copper complexes supported with ligands with two N amidate atoms in conjunction with either two pyridine [49,50], two amine in 12-membered macrocyclic ligands [23,24] and their open-chain analogues [25], two amine in 13-membered macrocyclic ligand [57,58], two 1-pyrroline [42], two pyrrolidine [42] and two acetate [55]. The E 1 potentials are, however, comparable to the ligands where two N amidate donors are present in addition to two phenolato [59] and two thiophenolato [59]; and on higher side for the ligands containing two thiolato [59,60] and two amidate donors [61,62].…”

“…Fenton and co-workers have reported several mononuclear Ni(II) complexes supported with amide-based ligands additionally containing 1-pyrroline or pyrrolidine; for these complexes, the Ni-N amide distances were found in the range of 1.822-1.845 Å [42]. Moreover, Vagg and co-workers [43][44][45][46][47][48] as well as Amirnasr and co-workers [49,50] have noticed the Ni-N amide distances in the range of 1.837-1.868 Å for their mononuclear nickel or copper complexes with amide-pyridine/quinone based ligands.…”

Electrochemical synthesis and crystal structure studies of defective dicubane tetranuclear hydroxo and carboxamide ligand bridged cobalt(II)–cobalt(III) complexes with carboxamides produced from unprotected hydroxyaromatic carboxylic acids

“…The deprotonation of the ligand is facilitated by the addition of a base such as triethylamine, sodium hydride, or the use of the corresponding metal acetate [16][17][18][19][20]. A suitable alternative approach to the synthesis of these metal complexes is direct electrosynthesis [21][22][23][24].…”

“…A suitable alternative approach to the synthesis of these metal complexes is direct electrosynthesis [21][22][23][24]. In continuation of our interest in the synthesis of carboxamide ligands and their metal complexes [18][19][20], we herein report, for the first time, the robust one-pot synthesis of two new carboxamide ligands from the reaction of 4,5-dimethylphenylenediamine with unprotected salicylic acid and 2-hydroxy-3-naphthoic acid and the electrochemical synthesis of their defective dicubane mixed valance tetranuclear cobalt complexes, [Co 4 (m 3 -OH) 2 (m 2 -Me 2 hybeb) 2 (CH 3 CN) 6 ] (1), and [Co 4 (m 3 -OH) 2 (m 2 -Me 2 hyneb) 2 (CH 3 CN) 6 ] (2) (Scheme 1). The spectroscopic properties and X-ray crystal structures of these ligands and their complexes are also presented and discussed.…”