Table 2 Representative results by the new tridentate iron complex pre-catalysts
Pre-catalyst
a
Co-catalyst Al/Fe Pressure (atm)
T (
C) Time (min)
Act
b
Mw
c
Mw/Mn
d
T m
e
(
C) References
Type R
1
R
2
Polymer Oligomer
4A
Me H
MAO
3,000 30
100
30
7.61
0
99
2.8
–
[54]
4B
Me Me MAO
250 1.3
30
30
3.71
Trace
7.7
3.6
131.9
[55]
4C
Et
H
MAO
2,000 10
50
30
15.6
–
22.7
6.3
129.9
[56]
4D
Me H
MMAO
1,000 30
30
30
4.14
6.18
–
–
–
[58]
MAO methylaluminoxane,
MMAO modified methylaluminoxane
a
See Scheme 4
b
10
6
g mol
À1
(Fe) h
À1
c
Molecular weight, as determined by GPC
d
Polydispersity, as determined by GPC
e
Melting temperature, as determined by DSC
170
W.-H. Sun
Pre-catalyst
a
Co-catalyst Al/Fe Pressure (atm)
T (
C) Time (min)
Act
b
Mw
c
Mw/Mn
d
T m
e
(
C) References
Type R
1
R
2
Polymer Oligomer
4A
Me H
MAO
3,000 30
100
30
7.61
0
99
2.8
–
[54]
4B
Me Me MAO
250 1.3
30
30
3.71
Trace
7.7
3.6
131.9
[55]
4C
Et
H
MAO
2,000 10
50
30
15.6
–
22.7
6.3
129.9
[56]
4D
Me H
MMAO
1,000 30
30
30
4.14
6.18
–
–
–
[58]
MAO methylaluminoxane,
MMAO modified methylaluminoxane
a
See Scheme 4
b
10
6
g mol
À1
(Fe) h
À1
c
Molecular weight, as determined by GPC
d
Polydispersity, as determined by GPC
e
Melting temperature, as determined by DSC
170
W.-H. Sun