Crystal structure of (E)-1-{2-[(5,5-dimethyl-1,3,2-dioxaphosphinan-2-yl)oxy]naphthalen-1-yl}-N-(4-fluorophenyl)methanimine

In the title compound, C 22 H 21 FNO 3 P, 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 fluorophenyl ring is inclined to the naphthalene ring system by 24.42 (7)°. In the crystal, molecules are linked via C—H...π interactions, forming slabs lying parallel to (10-1).

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