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Structure of a Tricyclic Photoproduct C 15 H 24 O 3 by X‐Ray Analysis
Author(s) -
Bernardinelli Gérald,
Gerdil Raymond
Publication year - 1974
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19740570632
Subject(s) - chemistry , intramolecular force , ring (chemistry) , monoclinic crystal system , crystallography , crystal structure , substituent , envelope (radar) , group (periodic table) , x ray , stereochemistry , hydrogen bond , molecule , telecommunications , radar , physics , organic chemistry , quantum mechanics , computer science
The crystal structure of the photoproduct 1 (C 15 H 24 O 3 ; monoclinic, a = 7.682, b = 14.448, c = 12.925 Å, β = 108.4°; space group P2 1 / c , Z = 4) has been determined by X‐ray analysis. The structure was solved by direct methods and the positions of all hydrogen atoms were obtained from a difference synthesis. The final R factor is 0.049. The polycyclic skeleton of 1 consists of a trans ‐decalone ring system axially fused to an oxolane ring in a conformation intermediate between the envelope and twist form. Strong intramolecular non‐bonded interactions are observed among the substituent atoms.