_P.-Powell-auth.-Principles-of-Organometallic-Chemistry-Springer-Netherlands-1988

1 2·65 1 9
-...:..... _;.;;.-c 1·49
\ 33 Z~n 11~c
" I- c
2·9 --_Zn_____-- ~
96"h9 c
105° 7c.·
/ c-..........!44:.,..--r
c /~5° c
!~zn--- \.
:
~ ,'}-\ -.._Zn---- c-e, '\
4·1 ,' 1 c
: 4·1
' '
/ c......._:/---r
C Zn
(o)
(b)
Fig. 3.14 (a) Crystal structure of the ethylzinc iodide polymer. (After P.T.
Moseley and H.M.M. Shearer, Chem. Comm., 1966, 876.)
(b) Crystal structure of methylzinc methoxide tetramer (After
H.M.M. Shearer and C.B. Spencer, Chem. Comm., 1966, 194).
[EtZnCI] 4 and [EtZnBr] 4 are similar. (c) Crystal structure of
[MeZnNPh 2 ] 2 • Ali the angles in the four-membered ring are right
angles. (After N.A. Beii, H.M.M. Shearer and C.B. Spencer, Acta
Cryst., 1983 C39, 1182).