Enantiomerically pure and racemic dimethyl{N-[(2-oxidonaphthalen-1-yl-κO)methylidene]valinato-κ2N,O}tin(IV).

The title compound, [Sn(CH(3))(2)(C(16)H(15)NO(3))], crystallized from one reaction batch with high enantiomeric excess as both a pure enantiomer and a racemate. The S enantiomer crystallizes in the chiral space group P3(2). The racemate crystallizes in the space group P1 with R and S enantiomers in the crystal lattice; these form dimers about a crystallographic inversion centre.