- Title
- Epitaxial retrieval of a disappearing polymorph
- Creator
- Tidey, Jeremiah P.; O'Connor, Alice E.; Markevich, Alexander; Bichoutskaia, Elena; Cavan, Joseph J. P.; Lawrance, Geoffrey A.; Wong, Henry L. S.; McMaster, Jonathan; Schröder, Martin; Blake, Alexander J.
- Relation
- Crystal Growth and Design Vol. 15, Issue 1, p. 115-123
- Publisher Link
- http://dx.doi.org/10.1021/cg500967w
- Publisher
- American Chemical Society
- Resource Type
- journal article
- Date
- 2015
- Description
- Recrystallization of [PdCl₂([9]aneS₂O)] ([9]aneS₂O = 1-oxa-4,7-dithiacyclononane), 1, and [PtCl₂([9]aneS₂O)], 2, by diffusion of Et₂O vapor into solutions of the complexes in MeNO₂ yielded three phases of 1 and two phases of 2. The known phase of 1, herein designated α-1, was obtained under ambient conditions. A second phase, designated β-1, was initially also obtained by this method; however, following the advent of a third phase, γ-1, all subsequent efforts over a period of a year to crystallize β-1 yielded either γ-1, obtained by carrying out the recrystallization at elevated temperature, or α-1, commonly found throughout the study. This persistent absence of a phase which could initially be crystallized with ease led us to the conclusion that β-1 was an example of a "disappearing polymorph". The first phase obtained of 2, designated α-2, was obtained by recrystallization under ambient conditions and is isomorphous and isostructural with α-1. The second phase β-2 was obtained by slight elevation of the recrystallization temperature and was found to be isomorphous and isostructural with β-1. Subsequently, β-2 was used to seed the growth of the disappearing polymorph β-1. No third phase of 2 (γ-2) has been isolated thus far.
- Subject
- recrystallization; disappearing polymorph; seed; growth
- Identifier
- http://hdl.handle.net/1959.13/1334462
- Identifier
- uon:27296
- Identifier
- ISSN:1528-7483
- Rights
- This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
- Language
- eng
- Full Text
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