Polymorphism of 2-Adamantanone.
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| Title: | Polymorphism of 2-Adamantanone. |
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| Authors: | Negrier, P.1, Barrio, M.1, Romanini, M.1, Tamarit, J. Ll.1, Mondieig, D.1, Krivchikov, A. I.1, Kepinski, L.1, Jezowski, A.1, Szewczyk, D.1 |
| Source: | Crystal Growth & Design. May2014, Vol. 14 Issue 5, p2626-2632. 7p. |
| Subjects: | Polymorphism (Crystallography), X-ray diffraction, High pressure chemistry, Thermal analysis, Crystal lattices, Phase diagrams |
| Abstract: | Thepolymorphism of 2-adamantanone (C10H14O) hasbeen investigated by means of X-ray diffraction and high-pressurethermal analysis. The intricate behavior of the low-temperature crystallinephases has been disentangled. The stable phase has been found to beorthorhombic (Cmc21, Z= 4), fully ordered, with lattice parameters a=6.8884(18) Å, b= 10.830(3) Å, c= 10.658(3) Å, and V/Z= 198.8(1) Å3. The metastable phase was determinedto be monoclinic (P21/c, Z= 4) with lattice parameters a= 6.5920(17) Å, b= 11.118(3) Å, c= 12.589(3) Å, β= 118.869(11) o,and V/Z= 202.0(1) Å3. The pressure–temperature phase diagram irrefutably showsthe stability relation between both phases and, accordingly, the long-timeunknown polymorphic behavior is now revealed and gives coherent physicalexplanation of the literature published so far. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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