
TY  - JOUR
A1  - Bruce, MI 
A1  - Humphrey, PASBW 
A1  - White, AH 
T1  - Pentakis(methoxycarbonyl)cyclopentadiene chemistry. VIII. Some onium salts  X-ray structure of [Nme<sub>4</sub>][C<sub>5</sub>(CO<sub>2</sub>Me)<sub>5</sub>]
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1984
VL  - 37
IS  - 12
SP  - 2441
EP  - 2446
KW  - 
UR  - https://doi.org/10.1071/CH9842441 
N2  - Reactions between Tl[C5(CO2Me)5] and [R]X [R = NMe4, NEt4, NPr4, NBu4, AsPh4, N(PPh3)2; X = C1, Br] have given salts [R][C5(CO2Me)5] as white, crystalline solids. The X-ray structure of [NMe4][C5(CO2Me)5] has been determined; the unit cell contains isolated cations and anions, with no close interactions between them. The anion consists of a planar C5 ring [C-C 1.406(10) Å] with five CO2Me substituents whose planes have an essentially random orientation with respect to the C5 plane. [NMe4][C5(CO2Me)5] is monoclinic, space group P21/c, with a 9.267(4), b 16.249(5), c 14.687(6) Åº, &#946; 100.90(3)º, and Z 4; 1610 data with I >3&#963; (I) were refined to R 0.066 and R' 0.053. 
ER  -

