NMR studies of bridged ring systems: XIX— 13 C 1 H spin coupling and  13 C chemical shift of the bridge methylene in benzonorbornene and benzonorbornadiene | Zendy

Tori Kazuo | Zendy; Tsushima Tadahiko | Zendy; Tanida Hiroshi | Zendy; Kushida Katsuhiko | Zendy; Satoh Shiroh | Zendy

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NMR studies of bridged ring systems: XIX— 13 C 1 H spin coupling and 13 C chemical shift of the bridge methylene in benzonorbornene and benzonorbornadiene

Author(s) -

Tori Kazuo,

Tsushima Tadahiko,

Tanida Hiroshi,

Kushida Katsuhiko,

Satoh Shiroh

Publication year - 1974

Publication title -

organic magnetic resonance

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0030-4921

DOI - 10.1002/mrc.1270060606

Subject(s) - norbornane , methylene , norbornene , methylene bridge , norbornadiene , ring (chemistry) , crystallography , chemistry , coupling constant , chemical shift , spin (aerodynamics) , proton , stereochemistry , nuclear magnetic resonance , physics , medicinal chemistry , nuclear physics , organic chemistry , quantum mechanics , catalysis , polymer , monomer , thermodynamics

Data on 13 C chemical shifts and 13 C 1 H spin coupling constants of norbornane ( 1 ), norbornene ( 2 ), norbornadiene ( 3 ), benzonorbornene ( 4 ) and benzonorbornadiene ( 6 ) are reported. The non‐equivalence in J ( 13 CH) values determined from the two bridge methylene proton signals in 2,2,3,3‐tetradeuteriobenzonorbornene ( 5 ) and 6 is briefly discussed. The extraordinary deshielding of the bridge methylene carbon in 6 has been noted.

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