Opening book details…
Can I read In-situ High-pressure Study of the Ordered Phase of Ethyl Propionate on EtoBox?
In-situ High-pressure Study of the Ordered Phase of Ethyl Propionate by Roman Gajda; Andrzej Katrusiak is a Chemistry article available to read on EtoBox.
What is In-situ High-pressure Study of the Ordered Phase of Ethyl Propionate about?
Ethyl propionate, C~5~H~10~O~2~ (m.p. 199 K), has been __in-situ__ pressure-frozen and its structure determined at 1.34, 1.98 and 2.45 GPa. The crystal structure of the new high-pressure phase (denoted β) is different from phase α obtained by lowering the temperature. The freezing pressure of ethyl propionate at 296 K is 1.03 GPa. The molecule assumes an extended chain __s-trans–trans–trans__ conformation, only slightly distorted from planarity. The closest intermolecular contacts in both phases are formed between carbonyl O and methyl H atoms; however, the ethyl-group H atoms in phase β form no contacts shorter than 2.58 Å. A considerable molecular volume difference of 24.2 Å^3^ between phases α and β can be rationalized in terms of degrees of freedom of molecules arranged into closely packed structures: the three degrees of freedom allowed for rearrangements of molecules confined to planar sheets in phase α, but are not sufficient for obtaining a densely packed pattern.
Who reads In-situ High-pressure Study of the Ordered Phase of Ethyl Propionate?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Roman Gajda; Andrzej Katrusiak
- Publisher
- International Union of Crystallography; Blackwell Publishing Inc.; International Union of Crystallography (IUCr) (ISSN 0108-7681)
- Published
- 2007
- Language
- EN
- Field
- Chemistry (Physical Sciences)