Smets MMH, Kalkman E, Tinnemans P, Krieger AM, Meekes H, Cuppen HM. Polymorphism of the quasiracemate d-2-aminobutyric acid:l-norvaline.
CrystEngComm 2017. [DOI:
10.1039/c7ce01270e]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new polymorphic quasiracemate d-2-aminobutyric acid:l-norvaline has been discovered and its reversible single-crystal-to-single-crystal phase transition has been studied using XRD, DSC and thermal microscopy. The low temperature form I is fully ordered, while form II shows two conformations for l-norvaline with a 50/50 occupancy.
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