ISSN:
1042-7163
Schlagwort(e):
Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
Crystal and molecular structures of two enantiomers of methoxycarbonylmethyl carboxymethyl sulfoxide 2 ( 2(-) and 2(+) ) have been determined by X-ray methods. Crystals of 2 are orthorhombic, space group P212121, Z = 4, with a = 5.1900(4) Å, b = 8.7960(7) Å, and c = 18.489(2) Å in 2(-) and a = 5.1897(7) Å, b = 8.787(1) Å, and c = 18.520(2) Å in 2(+). Structures 2(-) and 2(+) were refined to R factors equal to 0.041 and 0.052, respectively. The absolute configuration at the sulfur atom in enantiomer 2(-) with [α]D20 = -20° (MeOH) is Rs. (In 2(+), where [α]D20 equals + 20° (MeOH), the absolute configuration at S atom is Ss.) In compounds 2(-) and 2(+), a strong intermolecular hydrogen bond O3—H3 … O1 occurs.
Zusätzliches Material:
8 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/hc.520050214
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