نتایج جستجو برای: polymorph
تعداد نتایج: 2081 فیلتر نتایج به سال:
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 ...
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...
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...
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