Synthesis, characterization and electrochemical studies of heterometallic manganese(IV)–zinc(II) and manganese(IV)–copper(II) complexes derived from bis(2-hydroxy-1-naphthaldehyde)oxaloyldihydrazone

Structural-Dependent N,O-Donor Imine-Appended Cu(II)/Zn(II) Complexes: Synthesis, Spectral, and in Vitro Pharmacological Assessment

“…However, no visible change is observed in the graph of [(L 1 ) 2 Cu] and [(L 1 ) 2 Zn] complexes up to 200 °C, signifying the nonoccurrence of coordinated water moieties. 44 The initial thermal decomposition in [(L 7 The thermal analysis results are in accordance with the outcomes of elemental analysis.…”

“…The first decomposition of [(L 1 ) 2 Cu] and [(L 1 ) 2 Zn] complexes in the temperature range 220–480 °C displayed weight losses (obs = 52.64 and 52.72%, cal = 52.98 and 52.84%) assigned to the disintegration of the naphthalene part of the ligand framework at imine bond, while the second decomposition with weight losses (obs = 24.85, 24.76%, cal = 24.94 and 24.88%) in the temperature range 490–690 °C could be accredited to the loss of residual organic moieties. However, no visible change is observed in the graph of [(L 1 ) 2 Cu] and [(L 1 ) 2 Zn] complexes up to 200 °C, signifying the nonoccurrence of coordinated water moieties . The initial thermal decomposition in [(L 2 )­Cu­(H 2 O)] and [(L 2 )­Zn­(H 2 O)] complexes revealed weight loss (obs = 5.52 and 5.49%, cal = 5.65 and 5.62%) in the temperature range 80–140 °C, corresponding to the coordinated water molecules, while the second disintegration step showed weight loss (obs = 27.23 and 26.70%, cal = 27.00 and 26.88%) in the temperature range 220–350 °C, which may be owing to the decomposition of propanediol moieties of L 2 ligand at the imine bond.…”

Oxidative Dehydrogenation of n‐Octane over Niobium‐Doped NiAl2O4: An Example of Beneficial Coking in Catalysis over Spinel

“…The metal precursors used in the synthesis, Ni(NO 3 ) 2 ⋅6 H 2 O (ACS reagent grade), Al(NO 3 ) 3 ⋅9 H 2 O (ACS reagent grade) and C 4 H 4 NNbO 9 ⋅ x H 2 O (99.99 % trace metals basis), were used as received from Sigma–Aldrich. Oxalyldihydrazine was freshly synthesised using a reported method . De‐ionized water was used throughout the synthesis.…”

Synthesis, characterization and electrochemical studies of some NiIICuII heterobimetallic complexes derived from succinoyldihydrazones

“…A survey of literature reveals that although some isolated studies are available on metal complexes of succinoyldihydrazones [16] and related dihydrazones [16][17][18][19], yet the synthesis and characterization of heterobimetallic complexes of dihydrazones is quite meagre [20]. In view of the above importance of heterobimetallic complexes, absence of work on heterobimetallic complexes of succinoyldihydrazones and highly flexible polyfunctional nature of succinoyldihydrazones, it was of interest to synthesize the heterobimetallic copper nickel complexes of the title dihydrazones ( Fig.…”