Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
139 10 |
Ultima descărcare din IBN: 2024-04-25 12:38 |
Căutarea după subiecte similare conform CZU |
547.497 (31) |
Chimie organică (484) |
SM ISO690:2012 TALMACI, Natalia, DRAGANCEA, Diana, GORINCIOI, Elena, BOUROSH, Pavlina, KRAVTSOV, Victor. Crystal structure and NMR spectroscopic characterization of 1,5-bis(2-hydroxy-3-methoxybenzylidene)carbonohydrazide. In: Chemistry Journal of Moldova, 2023, nr. 2(18), pp. 53-60. ISSN 1857-1727. DOI: https://doi.org/10.19261/cjm.2023.1074 |
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Chemistry Journal of Moldova | |||||||
Numărul 2(18) / 2023 / ISSN 1857-1727 /ISSNe 2345-1688 | |||||||
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DOI:https://doi.org/10.19261/cjm.2023.1074 | |||||||
CZU: 547.497 | |||||||
Pag. 53-60 | |||||||
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The solid-state structure of a symmetrical carbohydrazone, namely 1,5-bis(2-hydroxy-3-methoxybenzylidene)carbonohydrazide was determined by X-ray single crystal diffraction method. Compound 1 crystallizes in the monoclinic space group P21/n with unit cell parameters a= 10.1198(6), b= 22.7847(11), c= 15.1738(10) Å, β= 100.458(6)°, Z= 4, V= 3440.6(3) Å3, R1= 0.0540. Crystal structure of 1 is defined by two crystallographic independent molecules, which are bonded via N–H···O hydrogen bond. The organic molecules are as keto tautomers with respect to the carbamide fragment, and adopt the anti conformation. 1D and 2D NMR experiments have argued on the presence of the title compound in DMSO-d6 solution mostly as keto tautomer in syn conformation, and enol-imino form when considering o-vanillin residue. |
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Cuvinte-cheie carbohydrazide, o-vanillin, syn-anti isomer, X-ray diffraction, NMR spectroscopy |
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