Solid-state chemistry ofO-ethoxy-trans-cinnamic acid
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چکیده
منابع مشابه
0108 - 7681 Photodimerization of the a 0 - polymorph of ortho - ethoxy - trans - cinnamic acid in the solid state . I . Monitoring the reaction at 293 K
polymorph of ortho-ethoxy-trans-cinnamic acid in the solid state. I. Structural changes that occur during the [2 + 2] photodimer-ization of the metastable H-polymorph of ortho-ethoxy-trans-cinnamic acid at 293 K are presented here. Crystals of the H-polymorph were ®rst stabilized by exposing the-polymorph to UV light for a short period of time at 343 K. The photodimerization reaction was then c...
متن کامل2,3,4,5,6-Pentafluoro-trans-cinnamic acid
The title compound, C9H3F5O2, crystallizes as O-H⋯O hydrogen-bonded carb-oxy-lic acid dimers that, together with C-H⋯F inter-actions and O⋯F [2.8065 (13) and 2.9628 (13) Å] and F⋯F [2.6665 (11), 2.7049 (12) and 2.7314 (12) Å] contacts, form a sheet-like structure. The sheets are stacked via short π-π inter-actions [centroid-centroid distance = 4.3198 (11) Å]. An intra-molecular C-H⋯F inter-acti...
متن کاملA new polymorph of ortho-ethoxy-trans-cinnamic acid: single-to-single-crystal phase transformation and mechanism.
The alpha-polymorph of ortho-ethoxy-trans-cinnamic acid (OETCA) undergoes a reversible single-crystal-to-single-crystal phase transformation at 333 K. The new high-temperature polymorph (alpha'-OETCA) is stable between 333 and 393 K with three molecules in the asymmetric unit (Z' = 3), space group P1;. Unlike the other polymorphs (and solvate) of OETCA recently reported, two of the molecules in...
متن کاملSolid State Inorganic Chemistry
We aim to understand and exploit the factors (strain, composition, band structure etc.) that determine structure and function in the crystalline solid state. Our interest is in the balance between local crystal chemistry, strain and longer range order in a wide range of compositionally and/or displacively flexible crystalline solids. The principal experimental research tools used are solid stat...
متن کاملChloroperoxidase-catalyzed halogenation of trans-cinnamic acid and its derivatives.
Several 2,3-unsaturated carboxylic acids, such as trans-cinnamic acid and its derivatives, were found to be halogenated by chloroperoxidase of Caldariomyces fumago in the presence of hydrogen peroxide and either Cl- or Br-. Cinnamic acid, 4-hydroxycinnamic acid, 4-methoxycinnamic acid, and 3,4-dimethoxycinnamic acid were suitable substrates of chloroperoxidase, and were converted to 2-halo-3-hy...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 1996
ISSN: 0108-7673
DOI: 10.1107/s0108767396081366