ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The molecular structures of (RS)-1,2,2,2-tetraphenylethyl methacrylate (TrBzMA) and (1S, 2R)-(+)-1-benzyl-3-dimethylamino-2-methyl-1-phenylpropyl methacrylate (ChMA) were determined by means of X-ray diffraction: (RS)-TrBzMA .0,5C6H6; triclinic, space group P1, a = 9,271(2), b = 33,965(4), c = 9,167(2) Å, α = 90,26(2), β = 118,80(2), γ = 88,03(2)°, and Z = 4; ChMA; monoclinic, space group P21, a = 12,482(1), b = 9,184(1), c = 9,246(1) Å, β = 93,49(1)°, and Z = 2. Both structures were solved by the direct method and refined by the block-diagonal least-squares procedure to R = 0,054 and 0,057 for non-zero reflections, respectively. Both of the two crystallographically independent molecules of TrBzMA have the same structure; each molecule has a synperiplanar (sp) conformation as to the C=C and C=O double bonds about the C(1)—C(2) bond and also an sp conformation as to the C=O and C—O bonds about the C(1)—O(1) bond. The ChMA molecule has an antiperiplanar (ap) and a sp conformation about the C(1)—C(2) and C(1)—O(1) bonds, respectively.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1984.021850509
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