Long-range coupling in cyclic silanes | Zendy

John T. Ferguson | Zendy; Qifeng Jiang | Zendy; Eric A. Marro | Zendy; Maxime A. Siegler | Zendy; Rebekka S. Klausen | Zendy

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Long-range coupling in cyclic silanes

Author(s) -

John T. Ferguson,

Qifeng Jiang,

Eric A. Marro,

Maxime A. Siegler,

Rebekka S. Klausen

Publication year - 2020

Publication title -

dalton transactions

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.98

H-Index - 184

eISSN - 1477-9234

pISSN - 1477-9226

DOI - 10.1039/d0dt03163a

Subject(s) - silanes , coupling (piping) , range (aeronautics) , chemistry , stereochemistry , materials science , organic chemistry , silane , metallurgy , composite material

We report the synthesis of a mixed methyl- and hydro-substituted cyclosilane (1) possessing cis/trans stereoisomerism. Each diastereomer of 1 possesses distinct symmetry elements (cis-1: Cs-symmetric; trans-1: C2-symmetric). Cyclosilane 1 is a model system to probe configuration- and conformation-dependent long-range proton-proton coupling. Extensive NMR spectroscopic characterization is reported, including one-dimensional 1H NMR and 29Si DEPT and INEPT+ spectra and two-dimensional 1H-29Si and 1H-1H correlated spectroscopy (HSQC, HMBC, COSY). On the basis of these experiments, molecular connectivity consistent with four-bond 1H-1H coupling is confirmed.

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