Solution and solid-state structure of (1-methoxy-8-naphthyllithium. THF)(2)
The structure of (1-methoxy-8-naphthyllithium.THF)(2), (2.THF)(2), determined by single-crystal X-ray diffraction (crystal data: monoclinic, a = 8.1816 (5), b = 21.9649 (14), and c = 8.2345 (3) A, beta = 117.969 (3) degrees; V = 1306.97 (12) A(3); space group P2(1)/n; Z = 4) reveals a centrosymmetrical dimer with a twist angle of about 63 degrees between the naphthyl rings and the Li-C(ipso)-Li plane, representing an intermediate between perpendicular and planar tetracoordinated C(ipso). NMR studies at low temperature indicate that 2 is dimeric in THF-d(8) solution under these conditions.
Betz
J
Instiut fur Organische Chemie, Universitat Erlangen-Nurnberg, Henkestrasse 42, D-91054 Erlangen, Germany.
Hampel
F
Bauer
W