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Geminal 2J(29Si-O-29Si) Couplings in Oligosiloxanes and Their Relation to Direct 1J(29Si-13C) Couplings
- 1.0363027 - ÚCHP 2012 RIV GB eng J - Journal Article
Kurfürst, Milan - Blechta, Vratislav - Schraml, Jan
Geminal 2J(29Si-O-29Si) Couplings in Oligosiloxanes and Their Relation to Direct 1J(29Si-13C) Couplings.
Magnetic Resonance in Chemistry. Roč. 49, č. 8 (2011), s. 492-501. ISSN 0749-1581. E-ISSN 1097-458X
R&D Projects: GA ČR GP203/08/P412; GA AV ČR IAA400720706
Institutional research plan: CEZ:AV0Z40720504
Keywords : 29Si NMR * 13C NMR * 29Si couplings
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.437, year: 2011
Relationships are found between 79 measured 2J(29Si-O-29Si) couplings in oligosiloxanes and 29Si chemical shifts, number of oxygenous substituents and 1J(29Si-13C) couplings. In selected compounds the signs of the 2J couplings are positive, it is argued that all the 2J(29Si-O-29Si) couplings are positive. Density functional calculations failed to reproduce the signs and trends in the couplings.
Permanent Link: http://hdl.handle.net/11104/0199153
Number of the records: 1