Lithium 2-lithio-1,1,3,3-tetraphenylpropenide
Abstract
The novel lithium 2-lithio-1,1,3,3-tetraphenylpropenide (2) is shown via1H, 13C, and 7Li n.m.r. spectroscopy and by chemical means to adopt an ionic allyl-lithium structure with C2v symmetry; the second lithium is covalently bonded to the central (C-2) carbon.