Toshiro
Harmless
Posts: 11
Registered: 4-8-2007
Member Is Offline
Mood: No Mood
|
|
CoCl(PPh3)3
Hello everyone ,
I want to know if the synthesis of CoCl(PPh3)3 is cobalt trichloride with triphenylphosphine with ethanol as reducing agent , like the synthesis of
wilkinson catalyst , is this correct or there is a difference ? thanks ..
|
|
|
guy
National Hazard
Posts: 982
Registered: 14-4-2004
Location: California, USA
Member Is Offline
Mood: Catalytic!
|
|
Well good luck getting CoCl3. That is almost impossible to get since Co(III) is an extremely strong oxidizing agent, only CoF3 has been really made.
|
|
|
Toshiro
Harmless
Posts: 11
Registered: 4-8-2007
Member Is Offline
Mood: No Mood
|
|
Ok Guy , how can i do this synthesis , do you have another idea ?
|
|
|
guy
National Hazard
Posts: 982
Registered: 14-4-2004
Location: California, USA
Member Is Offline
Mood: Catalytic!
|
|
Why not just use anhydrous CoCl2 and PPh3?
|
|
|
The_Davster
A pnictogen
Posts: 2861
Registered: 18-11-2003
Member Is Offline
Mood: .
|
|
The reference for the synthesis of this is:
Watatsuki, Y.; Yamazaki, H. Inorg. Syn. 1989, 26, 189–200.
|
|
|
Toshiro
Harmless
Posts: 11
Registered: 4-8-2007
Member Is Offline
Mood: No Mood
|
|
Please give more details , that's very interressant  , with CoCl2 ?
|
|
|
The_Davster
A pnictogen
Posts: 2861
Registered: 18-11-2003
Member Is Offline
Mood: .
|
|
I cannot access that article, a preparation on orgsyn.org which uses the chlorotris(tripheylphosphine)cobalt(I) compound only cites the above article
for the synthesis.
|
|
|
Toshiro
Harmless
Posts: 11
Registered: 4-8-2007
Member Is Offline
Mood: No Mood
|
|
Thanks anyway The_Davster , do you have any idea yourself ?
[Edited on 4-8-2007 by Toshiro]
|
|
|
Sandmeyer
National Hazard
Posts: 784
Registered: 9-1-2005
Location: Internet
Member Is Offline
Mood: abbastanza bene
|
|
It seems you're only here for one reason, and you're very annoying as you fail to understand that ppl are providing as much info as they can in order
to help you. 
|
|
|
Toshiro
Harmless
Posts: 11
Registered: 4-8-2007
Member Is Offline
Mood: No Mood
|
|
Sandmeyer , why i'm annoying because i want to learn more ? ... whats the problem ?
|
|
|
Nicodem
Super Moderator
Posts: 4230
Registered: 28-12-2004
Member Is Offline
Mood: No Mood
|
|
You asked a question about the synthesis of CoCl(PPh3)3 and you were given a working procedure by The_Davster. Next, you ask about unpublished ideas
on how to prepare that complex. Meanwhile you provide no background about why you need that and especially in what context. This smells of R&D
parasitism (that is: lazy researchers without imagination asking others to do the intellectual work for which they are paid for). This forum
had a lot of incursions like that in the recent year so you happened (perhaps unjustly) to raise suspicions about being one of those members who did
not read the forum subtitle: The art and science of amateur experimentalism. Several members here work in profit
institutions as well, but they generally do not abuse this forum (well, I would say there is a silent consensus that only the Reference section can be
abused but always on the premise that the reference is needed utmost for academic research…). So it happened that some members (like Sandmeyer)
became extremely touchy about the amateur vs. professional issue.
…there is a human touch of the cultist “believer” in every theorist that he must struggle against as being
unworthy of the scientist. Some of the greatest men of science have publicly repudiated a theory which earlier they hotly defended. In this lies their
scientific temper, not in the scientific defense of the theory. - Weston La Barre (Ghost Dance, 1972)
Read the The ScienceMadness Guidelines!
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
