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

a)
o
III
c
1
c
1
o
1
H /H
'-c
H2 ,l!--1 --
H'. /H
L.
- - or
M M M M -H20 M M M M
-
1
CH2 CH3 CH2
11 1
M M M M
/CH3 (CH2CH=CH2
CH2CH2CH3 H ~
---- --
1 1 '?
M M
CH3
1
o H
\:/
1
M
,_CH4
~ see ( c ) or ( d)
--
b) (i)
/CH3 Ph c+
Cp2W~ __ 3_
CH 3
+~CH2
Cp2W......_
'-CH3
C + /CH2CH3
P2W
~
Cp w/
2 ~H
(ii)
CH3 CH3
1 CH2 1
Cp*Rh/ '-....RhCp
~CH2/
CH
1 3 CH2CH3
CH 3 H CH3
* 1 1 (
- CpRh * + /RhCp * - Cp Rh -Rh- --+ CH4+CH3CH=CH2
CH2
Cp*
c)
MH /H MH MH
M-CO - M-C :::-.,. --M-CH20H --+ M-CH3
~o
(d)
CO MH MH CO
M-CH3-M-COCH3- M-CH(OH)CH3 - M-CH2CH3 - -etc
-H20
MH
- M-CH2CH2R - RCH2 CH3+ M
or '------. RCH=CH2+ M-H
M-CH(OH) R ~
RCH20H + M
Fig. 12.19 Possible reaction paths in Fischer Tropsch reactions. (a) A suggested scheme involving surface methylene groups.
(b) Analogues from chemistry of complexes. (c) (d) Further possible pathways. M = surface metal atom. Ali these
steps ha ve analogies in the chemistry of known complexes.