title: 4,4,5,5-Tetra-methyl-1,3,2λ-dioxa-phospho-lan-2-one.
abstract: The five-membered ring in the title compound, C(6)H(13)O(3)P, exists in an envelope conformation with one of the ring C atoms at the flap position. The coordination geometry around the P atom is a distorted tetra-hedron. The crystal structure is stabilized by several weak C-H⋯O and P-H⋯O hydrogen bonds, forming a three-dimensional network.
authors.affiliation: Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław,  Poland.
authors.forename: Anna
authors.initials: A
authors.lastname: Skarżyńska
authors.forename: Anna M
authors.initials: AM
authors.lastname: Trzeciak
authors.forename: Andrzej
authors.initials: A
authors.lastname: Gniewek
references.citation: Chem Rev. 2000 Aug 9;100(8):3009-66
references.pmid: 11749313
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677