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▫$^{14}$▫N nuclear quadrupole resonance study of piroxicam: confirmation of new polymorphic form VLavrič, Zoran ...Ob pripravi poznanih kristalnih polimorfov piroksikama I, II in III smo odkrili novo polimorfno obliko in ji izbrali oznako V. Polimorfe smo analizirali s kvadrupolno resonanco JKR ▫$^{14}$▫N, ... praškovno rentgensko difrakcijo (XRPD), termičnimi analizami in vibracijskimi spektroskopijami. Prvič smo izmerili kompleten set devetih karakterističnih črt JKR ▫$^{14}$▫N za 3 molekularne pozicije dušika v vsakem polimorfu I, II, III in V. Tako lahko spremljamo spremembe parametrov kvadrupolnega tenzorja na 3 dušikovih pozicijah ob prehajanju med polimorfnimi oblikami. XRPD rezultati so v skladu z zaključki JKR ▫$^{14}$▫N. Ta študija dokazuje močan pontencial metode JKR ▫$^{14}$▫N kot učinkovitega, ločljivega spektroskopskega orodja za karakterizacijo polimorfnih kristalnih oblik.Source: Journal of pharmaceutical sciences. - ISSN 0022-3549 (Vol. 104, iss. 6, 2015, str. 1909-1918)Type of material - article, component partPublish date - 2015Language - englishCOBISS.SI-ID - 17286233
Author
Lavrič, Zoran |
Pirnat, Janez, 1948- |
Lužnik, Janko, 1948-2012 |
Puc, Uroš |
Trontelj, Zvonko, 1937-2024 |
Srčič, Stanko
Topics
piroksikam |
polimorfizem |
fizična karakterizacija |
spektroskopija |
kvadrupolna resonanca (JKR) ▫$^{14}$▫N |
vodikove vezi |
praškovna rentgenska difrakcija (XRPD) |
kalorimetrija (DSC) |
FTIR |
, Ramanska spektroskopija |
piroxicam |
polymorphism |
physical characterization |
spectroscopy |
$^{14}$N nuclear quadrupole resonance (NQR) |
H-bonds |
X-ray powder diffractometry |
calorimetry (DSC) |
FTIR |
Raman spectroscopy
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Lavrič, Zoran | 32037 |
Pirnat, Janez, 1948- | 02558 |
Lužnik, Janko, 1948-2012 | 04317 |
Puc, Uroš | 32578 |
Trontelj, Zvonko, 1937-2024 | 00208 |
Srčič, Stanko | 09031 |
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