Long-range coupling in cyclic silanes. Issue 42 (20th October 2020)

• Record Type: Journal Article
• Authors: Ferguson, John T.; Jiang, Qifeng; Marro, Eric A.; Siegler, Maxime A.; Klausen, Rebekka S.
• Is Part Of: Dalton transactions. Volume 49:Issue 42(2020)
• Page Start: 14951
• Page End: 14961
• Publication Date: 2020-10-20
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d0dt03163a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : We report the synthesis of a mixed methyl- and hydro-substituted cyclosilane (1 ) possessing cis / trans stereoisomerism. Abstract : 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 : C s -symmetric; trans -1 : C 2 -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 1 H NMR and 29 Si DEPT and INEPT+ spectra and two-dimensional 1 H– 29 Si and 1 H– 1 H correlated spectroscopy (HSQC, HMBC, COSY). On the basis of these experiments, molecular connectivity consistent with four-bond 1 H– 1 H coupling is confirmed.