Table 1.
All possible combinations of the intermediates 6 a–d with E′Cl3 (E′=P, As, Sb, Bi) and the resulting products [{CpMo(CO)2}2(μ,η2:η2‐E E′)]. Yield improvements compared to the literature syntheses are given subjacent (referred to A).
|
|
6 a (“P”) |
6 b (“As”) |
6 c (“Sb”) |
6 d (“Bi”) |
|---|---|---|---|---|
|
PCl3 |
P2 20 %→57 % |
P As (1) 5 %→50 % |
P Sb (2) 6 %→18 % |
unsuccessful |
|
AsCl3 |
P As (1) 5 %→69 % |
As2 35 %→52 % |
As Sb (3 a) 0 %→63 % |
unsuccessful |
|
SbCl3 |
P Sb (2) 6 %→59 % |
As Sb (3 a) 0 %→51 % |
Sb2 76 %→37 % |
unsuccessful |
|
BiCl3 |
unsuccessful |
As Bi (4) 0 %→58 % |
Sb Bi (5) 0 %→46 % |
Bi2 14 %→25 % |