Unequivocal existence of a centrosymmetric associated dimer of 4-(4- azuleno[1,2-b]thienyl)but-3-en-2-one formed by C-H···O=C hydrogen bonds in the crystals

Tetrahedron Letters

Volumn 40, Issue 36, 1999, Pages 6609-6611

  Yamamura, Kimiaki ^a   Kusuhara, Naoki ^a   Houda, Yuuko ^a   Sasabe, Misako ^a   Takagi, Hideki ^a   Hashimoto, Masao ^a  

^a KOBE UNIVERSITY   (Japan)

Author keywords

Azulene; Dimers; Enones; Hydrogen bonding

Indexed keywords

4 (4 AZULENO[1,2 B]THIENYL)BUT 3 EN 2 ONE; AZULENE DERIVATIVE; UNCLASSIFIED DRUG;

ARTICLE; CRYSTAL; CRYSTAL STRUCTURE; DIMERIZATION; HYDROGEN BOND; MOLECULAR MODEL; REACTION ANALYSIS; STRUCTURE ANALYSIS; X RAY CRYSTALLOGRAPHY;

EID: 0033520213     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(99)01318-0     Document Type: Article

References (15)

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12. Yamamura, K., et al., to be published.
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14. 2=0.056 for 2810 independent observed reflections (all reflections), 2θ≤55° and 200 parameters. Program teXsan was used.
15. The reduction of the bond-length alternation was also found in 4-(4-azuleno[2,1-b]thienyl)but-3-en-2-one, 1-phenyl-3-(4- azuleno[2,1-b]thienyl)prop-2-en-1-one and 1,1,1-triphenyl-4-(10-benz[a]azulenyl)-3-buten-2-one.