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NMR Investigation on the Solution Structure and Dynamic Behaviour of 1,2‐Diphenyl‐1,2‐bis(trimethylsilyl)ethanediyldilithium
Author(s) -
Fürstner Alois,
Seidel Günter,
Mons HansEgbert,
Mynott Richard
Publication year - 1998
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199811)1998:11<1771::aid-ejic1771>3.0.co;2-l
Subject(s) - chemistry , trimethylsilyl , lithium (medication) , yield (engineering) , nuclear magnetic resonance spectroscopy , derivative (finance) , metal , carbon 13 nmr , medicinal chemistry , organic chemistry , medicine , materials science , economics , financial economics , metallurgy , endocrinology
1,2‐Diphenyl‐1,2‐bis(trimethylsilyl)ethene ( 5 ) undergoes a smooth reductive metallation with metallic lithium to yield the corresponding dilithioethane derivative (Li 2 · 5 ). The structure of this new compound in [D 8 ]THF solution was determined by NMR spectroscopy ( 1 H, 13 C, 6 Li, 7 Li NMR and 6 Li, 1 H‐HOESY). It is shown that the phenyl rings have a high quinoid character and that the lithium cations are relatively mobile.