Crystal structures of 6-cyclo-propyl-1,3-diphenylfulvene and 6-(2,3-di-meth-oxy-naphth-yl)-1,3-di-phenylfulvene

• Published in: Acta crystallographica. Section E, Crystallographic communications Vol. 76; no. Pt 6; pp. 896 - 899
• Main Authors: Brown, Loren C, Iacono, Scott T, Balaich, Gary J
• Format: Journal Article
• Language: English
• Published: England International Union of Crystallography 01-06-2020
• Subjects: Research Communications; crystal structure; fulvene; C—H⋯C ring inter­actions
• ISSN: 2056-9890; 2056-9890
• DOI: 10.1107/S2056989020006441

The title compounds, 6-cyclo-propyl-1,3-diphenylfulvene, C
H
, [systematic name: 5-(cyclo-propyl-methyl-idene)-1,3-di-phen-yl-cyclo-penta-1,3-diene],
, and 6-(2,3-di-meth-oxy-naphth-yl)-1,3-diphenylfulvene, C
H
O
, {systematic name: 5-[(3,4-di-meth-oxy-naphthalen-2-yl)methyl-idene]-1,3-di-phenyl-cyclo-penta-1,3-di-ene},
, were prepared from 1,3-di-phenyl-cyclo-penta-diene, pyrrolidine, and the corresponding aldehydes in an ethano-lic solution. Each structure crystallizes with one mol-ecule per asymmetric unit and exhibits the alternating short and long bond lengths typical of fulvenes. A network of C-H⋯C ring inter-actions as well as C-H⋯O inter-actions is observed, resulting in the compact packing found in each structure.