Abstract
Abstract From literature values for the 1 J ( 119 Sn 13 C) coupling constants it is shown that in compounds SnMe 4 − n R n ( n = 1–3) the following relation exists between the coupling constants 1 J (SnC Me ) ( J i ) and 1 J (SnC R ) ( J II ) and those of the corresponding symmetric compounds SnMe 4 ( J I s ) and SnR 4 ( J II s ): J I / J I s = (− nJ II / J II s + 4)/(4 − n ). This relation can be deduced on the basis of the Fermi contact term by means of the simple hybrid orbital model theory, hence it follows that upon variation of the organic group R the change of the coupling constant 1 J (SnC Me ) ( J I ) reflects the change in s -character of the metal hybrid orbital concerned and thus the electronic influence of the organic group R. A similar relationship is also valid for compounds of the type SnR 1 R 2 R 3 R 4 and in a qualified sense for 1 J ( 207 Pb 13 C) coupling constants of organolead(IV) compounds.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
