title: Crystal structure of (E)-1-{2-[(5,5-dimethyl-1,3,2-dioxaphosphinan-2-yl)-oxy]naphthalen-1-yl}-N-(4-fluoro-phen-yl)methanimine.
abstract: In the title compound, C22H21FNO3P, a 1,3,2-dioxaphosphinan-2-yloxy derivative, three O atoms are bonded in a trigonal-pyramidal manner to the P atom. The exocyclic P-O bond is significantly longer than the two endocyclic P-O bonds, viz. 1.6678 (12) Å compared to 1.6046 (13) and 1.6096 (12) Å. The six-membered ring which includes the P atom has a chair conformation. The fluoro-phenyl ring is inclined to the naphthalene ring system by 24.42 (7)°. In the crystal, mol-ecules are linked via C-H⋯π inter-actions, forming slabs lying parallel to (10-1).
authors.affiliation: Chemistry Department, Taibah University, PO Box 30002, Code 14177, Al-Madinah Al-Munawarah, Kingdom of Saudi Arabia.
authors.forename: Musa A
authors.initials: MA
authors.lastname: Said
authors.affiliation: Chemistry Department, Taibah University, PO Box 30002, Code 14177, Al-Madinah Al-Munawarah, Kingdom of Saudi Arabia.
authors.forename: Bayan L
authors.initials: BL
authors.lastname: Al Belewi
authors.affiliation: School of Chemistry, University of East Anglia, Norwich NR4 7TJ, England.
authors.forename: David L
authors.initials: DL
authors.lastname: Hughes
keywords: 1,3,2-dioxaphosphinan-2-oxy; C—H⋯π inter­actions; crystal structure; naphthalene; phosphites