Synthesis of monosubstituted dipicolinic acid hydrazide derivative and structural characterization of novel Co(III) and Cr(III) complexes

Garin, Anita Blagus; Rakarić, Dunja; Kovač-Andrić, Elvira; Kosanović, Martina Medvidović; Balić, Tomislav; Perdih, Franc

doi:10.1016/j.poly.2019.03.059

Cited by 9 publications

(3 citation statements)

References 42 publications

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“…On the other hand, the IR spectrum of [Mo2O5(CO)L].H2O, (4) complex displayed two bands at 1718 and 627 cm -1 due to bridging carbonyl group and Mo-O-Mo bridged bond, respectively [26]. Also, the IR spectrum of complex (4) showed stretching frequencies of hydrated water and terminal Mo=O bonds for a cis MO2 fragment [27][28]. Both oxo complexes…”

Section: Ir Spectramentioning

confidence: 99%

Structural Characterization, thermal studies, fluorescence and optical properties of metal carbonyl derivatives of N2O2 Schiff Base

amer

Nassar

Ali

2021

Journal of Scientific Research in Science

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A series of four binuclear complexes [Cr2(CO)2L2] (1), [Mo2O4(L)2] (2), and [W2O4(L)2] (3) [Mo2O5(CO)L].H2O (4) were synthesized from the reaction of [M(CO)6] (M = Cr, Mo and W) with 6,6'-(([1,1'-biphenyl]-4,4' diylbis(azaneylylidene)) bis(methaneylylidene)) bis(2,4-dichlorophenol) H2L in THF. The structures of the ligand and its complexes were characterized using elemental studies, IR, mass, UV-vis and 1 H NMR spectroscopy. Magnetic measurements showed diamagnetic properties for molybdenum and tungsten complexes and paramagnetic character for chromium complex. The thermal analyses for all metal complexes were also determined by the thermogravimetry technique. The thermodynamics parameters of complexes were calculated. Spectroscopic data revealed that H2L was coordinated as a tetradentate ligand through two imine nitrogen and two deprotonated phenolic oxygen atoms. The Schiff base ligand (H2L) and its complexes displayed fluorescence properties and can potentially serve as photoactive materials. The values of optical band gap energy (Eg) of the prepared complexes suggested that these compounds could be used as semiconductors.

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Section: Ir Spectramentioning

confidence: 99%

Structural Characterization, thermal studies, fluorescence and optical properties of metal carbonyl derivatives of N2O2 Schiff Base

amer

Nassar

Ali

2021

Journal of Scientific Research in Science

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“…Dipicolinic acid (pyridine-2,6-dicarboxylic acid or PDC and DPA) and its salts are actively studied by scientists in various fields of chemistry [5][6][7]. This acid constitutes approximately 10 % of Bacillus subtilis spore dry weight and has been shown to play a significant role in the survival of B. subtilis spores exposed to wet heat and to 254 nm UV radiation in the laboratory [8][9].…”

Section: Introductionmentioning

confidence: 99%

Thermal properties of dipicolinic acid and dipicolinic acid sodium salt NaH(COO)2C5H3N•H2(COO)2C5H3N•3H2O

Rajakumar,

Sharutin,

Zherebtsov

et al. 2023

Chem

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Pyridine-2,6-dicarboxylic acid (dipicolinic acid) are actively studied by scientists. Dicarboxylic acid can be used as a special biomarker of anthrax. The crystal structure of NaH(COO)2C5H3N•H2(COO)2C5H3N•3H2O (1) was redetermined from single crystal. In the structure of the sodium salt of dipicolinic acid, sodium is the central atom having two molecules of dipicolinic acid and three molecules of water as ligands. The dipicolinic anion coordinate sodium cation by both oxygens and one nitrogen atom. A network of hydrogen bonds connects water and dipicolinic acid molecules. Hydrogen bonds take part in the formation of building blocks and arranging them into chains which, in their turn, make up layers. The sodium salt of dipicolinic acid as well as its precursor – dipicolinic acid were studied by IR spectroscopy and simultaneous thermal analysis. According to thermal analysis dipicolinic acid is anhydrous substance, that decompose on melting at 252 °C forming only gaseous products, presumably CO2 and pyridine. Opposite to that, thermolysis of its sodium salt follow much more complicated way. According to thermogram the 1 has first stage of three water molecules removal at 105 °C. The measured mass loss is very close to expected mass loss. Heat of dehydratation reaction is 151 kJ/mole. On a further heating the sodium salt of dipicolinic acid was melted at 256 °C with large mass loss. The nature of products at 268 and 315 °C is hard to state. EDX elemental analysis of black residue after 700 °C state brutto-formula of “NaNC5O2” – Na cyanate or carbonate in glassy carbon matrix.

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“…It is known that hydrazides and derivatives are significant nitrogenous compounds that exhibit herbicidal, anticancer, anti-inflammatory, antiviral, antibacterial bioactivities. This class of compounds has the ability to readily coordinate to many transition metals and can be used as a chain extruder in metal-containing PU [9,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

New Metal-Containing Poly(urethane-Semicarbazides) on the Basis of Pyridine Derivatives

Kositsyna

2019

Technology transfer: fundamental principles and innovative tech

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The growth of science and technology of polyurethanes leads to the development of new materials with more desirable properties. Modiﬁcation of polyurethane (PU) by incorporating metal and functional groups are used extensively to improve various properties, such as enhanced thermal stability, ﬁre retardancy, ﬂexibility and solubility. In this investigation, a new metal-containing poly(urethane-semicarbazides) bearing a pyridine moiety have been synthesized and characterized by Fourier transform infrared spectroscopy (FTIR), differential thermal analysis (DTA/TG) and tensile strength measurements. The results showed that the incorporation of metal ions into the polymer chain greatly inﬂuenced their mechanical and thermal properties. The tensile strength measurements on the PU ﬁlms showed a marked difference in the elongation and tensile strength for compositions with various metal salts. The nature of the anion of the salt also affects the properties of the polymers, since the anions are able to form complexes with hydrogen atoms of urethane-semicarbazide PU segments. According to the results of DTA, introduction of metal ions leads to the increase of the thermal stability of metal-containing PU, as compared to the original PU. FTIR spectra data confirmed that the metal ions Cu2+, Co2+ are coordinated in the polymer metal chelates with hydrazide and urethane groups. The research results can be used to develop the new materials and methods for the preparation and designing of metal-containing polymers required in various areas, such as development of medical equipment, functional films and other related areas.

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Synthesis of monosubstituted dipicolinic acid hydrazide derivative and structural characterization of novel Co(III) and Cr(III) complexes

Cited by 9 publications

References 42 publications

Structural Characterization, thermal studies, fluorescence and optical properties of metal carbonyl derivatives of N2O2 Schiff Base

Structural Characterization, thermal studies, fluorescence and optical properties of metal carbonyl derivatives of N2O2 Schiff Base

Thermal properties of dipicolinic acid and dipicolinic acid sodium salt NaH(COO)2C5H3N•H2(COO)2C5H3N•3H2O

New Metal-Containing Poly(urethane-Semicarbazides) on the Basis of Pyridine Derivatives

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