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Cover Picture: Structures and Reactions of 1,3‐Diamidodilithium Complexes: the Hemisolvated l ‐[CMe 2 {CHMeN(R)} 2 Li 2 ·OEt 2 ], the Unsolvated 1:1 Mixed Organo‐amidolithium u ‐[CMe 2 {CHMeN(R′)} 2 ·Li 2 ·( n BuLi) 2 ], and the Product of Oxidative Ring Closure, the Pyrazolidine l ‐[(RNCHMe) 2 CMe 2 ] (R = 2‐ i Pr‐C 6 H 4 ; R′ = 2,6‐ i Pr 2 ‐C 6 H 3 ) (Eur. J. Inorg. Chem. 18/2003)
Author(s) -
Carey David T.,
Mair Francis S.,
Pritchard Robin G.,
Warren John E.,
Woods Rebecca J.
Publication year - 2003
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200390237
Subject(s) - chemistry , crystallography , ether , diethyl ether , stacking , molecule , solvent , aryl , cluster (spacecraft) , cover (algebra) , x ray crystallography , stereochemistry , diffraction , organic chemistry , physics , mechanical engineering , alkyl , computer science , engineering , programming language , optics
The cover picture shows an Li 2 N 2 unit which is prevented by the bulk of the aryl substituents from stacking with another to form a cubic cluster. The diethyl ether solvent traps this fragment of a molecule which, in the absence of diethyl ether, precipitates as a powder, possibly by lateral association of Li 2 N 2 rings to form an infinite ladder in a manner first suggested by Ronald Snaith, whose memory is honoured in this special edition of EurJIC. Details are presented in the article by F. Mair et al. on p. 3464 ff.