(2,7-Dimethoxynaphthalen-1-yl)(naphthalen-1-yl)methanone

Abstract

The asymmetric unit of the title compound, C23H18O3, contains two independent mol­ecules (A and B). Each mol­ecule has essentially the same conformation (r.m.s. deviation of fitted mol­ecules = 0.173 Å) with the aromatic rings twisted in a near perpendicular manner. The dihedral angles between the two naphthalene ring systems are 79.07 (4) and 88.19 (4)° in the two independent mol­ecules. In the crystal, the A mol­ecules are connected by C—H⋯O inter­actions, forming chains along the b-axis direction. Further C—H⋯O inter­actions between the H atoms of the meth­oxy group and the O atoms of the carbonyl units link the A and B mol­ecules, forming a three-dimensional network.

1-[(Anthracen-9-yl)carbonyl]-2,7-dimethoxynaphthalene: a chain-like structure composed of face-to-face type dimeric molecular aggregates

“…A search of the Cambridge Structural Database (CSD Version 5.37, update 2 February 2016; Groom et al, 2016) showed 278 structures of 1-substituted naphthalene compounds containing 1-benzoylated 2,7-dialkoxynaphthalene and 1-naphthoylated 2,7-dialkoxynaphthalene (including -naphthoylated and -naphthoylated homologues). The title compound is closely related to (2,7-dimethoxynaphthalen-1-yl)(naphthalen-1-yl)methanone, (I) (Tsumuki et al, 2013), (2,7-dimethoxynaphthalen-1-yl)(phenyl)methanone, (II) (Kato et al, 2010), and 2,7-dimethoxy-1-(2-naphthoyl)naphthalene, (III) (Tsumuki et al, 2012). These homologues have two, three and one independent molecules, respectively, in the asymmetric units of (I), (II) and (III).…”