نتایج جستجو برای: polymorph

تعداد نتایج: 2081  

2013
B. C. Manjunath S. Madan Kumar A. C. Vinayaka S. Jayasheelan M. P. Sadashiva N. K. Lokanath

The asymmetric unit of the triclinic polymorph of the title compound, C21H25N3O3, consists of two mol-ecules, whereas for the monoclinic polymorph Z' = 1 [Fun et al. (2009 ▶). Acta Cryst. E65, o445]. The two mol-ecules exhibit an E configuration with respect to the C=N bond. The mol-ecules are linked into dimers by N-H⋯O and C-H⋯O hydrogen bonds forming R 2 (2)(8) ring motifs. In addition, π-π ...

2014
CARMEN TRIPON IRINA KACSO MARIA MICLAUS XENIA FILIP IOAN BRATU CLAUDIU FILIP

We present the spatial architecture of a new anhydrous polymorph of Acyclovir, obtained by rapid evaporation of a solution composed of Acyclovir and methanol. X-ray powder diffraction (XRPD), solid-state NMR (SSNMR), differential scanning calorimetry (DSC), and FTIR spectroscopy have been used as experimental tools to prove the formation of this new solid form and to characterize its crystallin...

2012
Aamer Saeed Michael Bolte Muhammad Arshad

The structure of the title compound, C(14)H(12)N(2)O(2) {systematic name: 2,2'-[hydrazinediylidenebis(methanylyl-idene)]diphen-ol}, has already been determined in the triclinic space group P[Formula: see text] with Z = 4 [El-Medani, Aboaly, Abdalla & Ramadan (2004 ▶). Spectrosc. Lett.37, 619-632]. However, the correct space group should be P2(1)/c with Z = 4. This structure is a new polymorph o...

Journal: :Acta Crystallographica Section C Crystal Structure Communications 2005

Journal: :Acta Crystallographica Section E Structure Reports Online 2007

Journal: :Acta Crystallographica 1960

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

Journal: :Acta Crystallographica Section E Structure Reports Online 2008

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