Synthesis, structure and cytotoxic activity evaluation of a dinuclear complex of Cd(II) with N′,N′2-bis[(1E)-1-(2-pyridyl)ethylidene]propanedihydrazide
“…106,107,[109][110][111]122 For this reason CBZ seemed ideal to test against crystallisation within our gels. CBZ, an anticonvulsant, crystallises in four known anhydrous, solventless forms (although the trigonal form could contain some solvent).…”
Section: Cbzmentioning
confidence: 99%
“…As the tridentate chelating deprotonated 3.11a is rigid and planar the coordination of two ligands around a metal centre results in the mer isomer, which has been isolated in this crystallisation. 109,110 As…”
Section: -108mentioning
confidence: 99%
“…109 Many LMWG contain functional groups that are sensitive to the pH of their environment. 7,8,11,12,15,18,[69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84] These groups can be deprotonated or protonated according to the pH of the solution and this may remove or create important interactions vital to the gel tuning and/or formation resulting in a gel that can be tuned by changing the pH.…”
mentioning
confidence: 99%
“…[106][107][108][109][110][111] Aspirin was also chosen as a drug compound which shows very little change in its structural crystallography in terms of polymorphism (there are two possible polymorphs) and habit growth. …”
The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source• a link is made to the metadata record in Durham E-Theses• the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.
“…106,107,[109][110][111]122 For this reason CBZ seemed ideal to test against crystallisation within our gels. CBZ, an anticonvulsant, crystallises in four known anhydrous, solventless forms (although the trigonal form could contain some solvent).…”
Section: Cbzmentioning
confidence: 99%
“…As the tridentate chelating deprotonated 3.11a is rigid and planar the coordination of two ligands around a metal centre results in the mer isomer, which has been isolated in this crystallisation. 109,110 As…”
Section: -108mentioning
confidence: 99%
“…109 Many LMWG contain functional groups that are sensitive to the pH of their environment. 7,8,11,12,15,18,[69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84] These groups can be deprotonated or protonated according to the pH of the solution and this may remove or create important interactions vital to the gel tuning and/or formation resulting in a gel that can be tuned by changing the pH.…”
mentioning
confidence: 99%
“…[106][107][108][109][110][111] Aspirin was also chosen as a drug compound which shows very little change in its structural crystallography in terms of polymorphism (there are two possible polymorphs) and habit growth. …”
The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source• a link is made to the metadata record in Durham E-Theses• the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.
“…A major interest of our research group is devoted to metal complexes of polydentate dihydrazone ligands [1][2][3][4][5], mainly because some of these complexes display substantial cytotoxic activity [2][3][4]. While searching for new ligands we have focused our attention on those that combine both hard and soft donor atoms [6][7][8][9][10][11], in particular the heterofunctionalised phosphines, where the phosphorus is the soft donor, and the hard donor is either an oxygen or nitrogen atom.…”
Abstract:The facile preparation of a racemic hydrazine bridged diphosphonium compound possessing a ring system analogous to bicyclo[3.3.2]decane is reported. Although the reaction yield is low, the structure of the compound, which possesses an eight-membered ring, two phosphonium cationic centers, a biimino bridge, molecular chirality and two fused aromatic rings locked into roughly perpendicular planes is unusual. The compound displays substantial biological activity in the brine shrimp test and cleaves plasmid DNA.
Polydentate ligands 1 and 2, which incorporate a terminal pyridyl moiety and an oxygen‐rich oxalate dihydrizide/malonic dihydrizide spacer moiety, as well as their binuclear metal complexes [Cu212] and [Cu222], which adopt a 1:1 metal/ligand ratio, were synthesized and characterized. Both complexes were screened for their catalytic activity in the nitroaldol reaction, in which [Cu212] worked efficiently as catalyst for both substituted benzaldehyde and pyridinecarboxaldehyde, whereas [Cu222] is highly substrate specific and showed activity towards nitro‐substituted aldehydes and pyridinecarboxaldehyde. Furthermore, as helicates are intrinsically chiral, the stereochemical architecture in the binuclear double‐stranded Cu2 helicates as catalyst favored the diastereoselective syn product with nitroethane and nitropropane and their respective diastereoselectivities were determined by using 1H NMR spectroscopy.
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