Particularitățile coordinăriI S-alchiltiosemicarbazonei 8-formilchinolinei la paladiu(II) [Articol]
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Abstract
Au fost sintetizate noi combinații complexe ale Pd(II) cu S-metiltiosemicarbazona 8-formilchinolinei (HL) și derivatul ei cu substituentul fenil în poziția 4 (4-Ph-HL). Prin metoda difracției razelor X pe monocristal a fost stabilită compoziția și structura moleculară și cristalină a acestor compuși, care este redată prin formulele [Pd(L) (NO2)] (1), [Pd(L)(NO2)]0,75[Pd(L)(Cl)]0,25 (2), [Pd(4-Ph-L)(NO2)] (3) și [Pd(4-Ph-L)(Cl)].0,25DMFA (4). Au fost analizate transformările conformaționale din derivați ai tiosemicarbazidei în funcție de substituenți, de starea coordinată/necoordinată și specificul coordinării acestor liganzi la ionul Pd(II). Se discută modul de împachetare a componentelor în cristalele acestor compuși cu evidențierea interacțiunilor fine.
New complex compounds of Pd(II) with S-methylthiosemicarbazone 8-formylquinoline (HL), and its derivatives with a phenyl substituent in position 4 (4-Ph-HL) were synthesized. The molecular and crystalline composition of these compounds was established by the single crystal X-ray diffraction method, as represented by the following formulas: [Pd(L)(NO2)] (1), [Pd(L)(NO2)]0.75[Pd(L)(Cl)]0.25 (2), [Pd(4-Ph-L)(NO2)] (3), and [Pd(4-Ph-L)(Cl)].0.5DMFA (4). An analysis was conducted of the conformational transformations in thiosemicarbazide ligands in relation to substituents and their coordination/uncoordination state. In addition, the specificity of coordination of these ligands to the Pd(II) ion was analyzed. The packing mode of the components in the crystals of these compounds is discussed, with particular attention given to the fine interactions that occur.
New complex compounds of Pd(II) with S-methylthiosemicarbazone 8-formylquinoline (HL), and its derivatives with a phenyl substituent in position 4 (4-Ph-HL) were synthesized. The molecular and crystalline composition of these compounds was established by the single crystal X-ray diffraction method, as represented by the following formulas: [Pd(L)(NO2)] (1), [Pd(L)(NO2)]0.75[Pd(L)(Cl)]0.25 (2), [Pd(4-Ph-L)(NO2)] (3), and [Pd(4-Ph-L)(Cl)].0.5DMFA (4). An analysis was conducted of the conformational transformations in thiosemicarbazide ligands in relation to substituents and their coordination/uncoordination state. In addition, the specificity of coordination of these ligands to the Pd(II) ion was analyzed. The packing mode of the components in the crystals of these compounds is discussed, with particular attention given to the fine interactions that occur.
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Keywords
compuși coordinativi, paladiu, tiosemicarbazonă, tiosemicarbazone alchilate, sinteză, coordinare, soluții, raze X, structură cristalină, distanțe interatomice, coordination compounds, palladium, thiosemicarbazone, alkylated thiosemicarbazones, synthesis, coordination, solutions, X-rays, crystal structure, interatomic distances
Citation
BOUROŞ, Paulina și Petru BULMAGA. Particularitățile coordinăriI S-alchiltiosemicarbazonei 8-formilchinolinei la paladiu(II). Studia Universitatis Moldaviae. Științe reale și ale naturii. 2025, nr.6(186), pp. 261-272. ISSN 1814-3237. Disponibil: https://doi.org/10.59295/sum6(186)2025_32