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5-Bromosalicylaldehyde, 99%, ACROS …

For the synthesis of 5-bromosalicylaldehyde thiosemicarbazone and for the antibacterial activity of their complexes, see: Joseph (2010). For the of 5-bromosalicylaldehyde thiosemicarbazone, see: Kargar (2010). For the of an NiII complex with a similar coordination environment, see: Güveli (2009). For the coordination chemistry of thiosemicarbazone derivatives, see: Lobana (2009).

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Thiosemicarbazone derivatives have a wide range of applications in biological inorganic chemistry and a very interesting coordination chemistry (Lobana , 2009). For example, CuII and NiII complexes with 5-bromosalicylaldehyde thiosemicarbazone show antibacterial activity against and (Joseph , 2010). As part of our study of thiosemicarbazone derivatives, we report herein the synthesis and the of a new NiII complex with 5-bromosalicylaldehyde thiosemicarbazone. In the title compound, in which the molecular structure unit matches the the NiII ion is coordinated in a square planar environment by one deprotonated dianionic 5-bromosalicylaldehyde thiosemicarbazone and one pyridine ligand (Fig. 1). The selected bond angles formed between donor atoms trough the Ni atom are N1—Ni1—N4 = 177.00 (10)° and O1—Ni1—S1 = 176.46 (6)°, and show a slightly distorted coordination environment. The thiosemicarbazone ligand is coordinated to the NiII ion in a tridentate chelating mode, forming five- and six-membered rings, as a "NOS" donor with the O/S atoms to each other, while the N1 azomethine atom is to the N4 atom from the pyridine ligand.

Synthesis, spectral characterization, solution equilibria, ..

Abstract A new Schiff base ligand was synthesized by reaction of 5-bromosalicylaldehyde with 1,2-bis(4-chloro-2-aminophenoxy)ethane
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Starting materials were commercially available and were used without further purification. The synthesis of 5-bromosalicylaldehyde thiosemicarbazone was adapted from a procedure reported previously (Joseph , 2010). 5-Bromosalicylaldehyde thiosemicarbazone (0.5 mmol) was dissolved in tetrahydrofurane (50 ml) and treated with one KOH pellet. After 30 min stirring under slight warming to 333 K, the solution was filtered and added to a nickel acetate tetrahydrate (0.5 mmol) solution in pyridine (10 ml). The reaction mixture was refluxed for 4 h under continuous stirring and showed a brown-red colour. Brown-red crystals of the complex, suitable for X-ray analysis, were obtained after six weeks by adding a 3:1 mixture of dimethylformamide and toluene (80 ml) to the reaction solution.

by inhibiting a step in the synthesis of ..

Microwave Synthesis, Spectral, Thermal and Electrical Properties of Some Metal Complexes Involving 5-Bromosalicylaldehyde
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has been synthesised from dimethyltin(IV) dichloride and a Schiff base derived from 5-bromosalicylaldehyde …
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