(2,7-Di-meth-oxy-naphthalen-1-yl)(naph-thalen-1-yl)methanone.

The asymmetric unit of the title compound, C23H18O3, contains two independent mol-ecules (A and B). Each mol-ecule has essentially the same conformation (r.m.

(8-Benzoyl-2,7-dieth-oxy-naphthalen-1-yl)(phen-yl)methanone.

In the title compound, C28H24O4, the benzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost anti-parallel, and the benzene rings make a dihedral angle of 20.03 (7)°. The dihedral angles between the benzene rings and the naphthalene ring system are 68.

2,7-Dimeth-oxy-1-(2-naphtho-yl)naph-thalene.

In the title mol-ecule, C(23)H(18)O(3), the dihedral angle between the two naphthalene ring systems is 80.44 (4)°. The mean plane of the bridging carbonyl C-C(=O)-C group makes a torsion angle of -68.