Chemistry Reference
In-Depth Information
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54
For DPPE-PdCl
2
there are two different
determinations of the crystal structure:
a) W. L. Steffen, G. J. Palenik,
Inorg.
Chem.
1976
,
15
, 2432; b) S. Singh, N. K.
Jha, P. Narula, T. P. Singh,
Acta Crys-
tallogr.
,
Sect. C
1995
,
51
, 593. In the case
of (a) one molecule of dichloromethane
is included in the unit cell, (b) is without
any solvent molecule.
55
For the determination of [(DPPE)PdCl
2
]
we chose the work of Steffen and Palenik
(Ref. [54a]) (because of the better
R
-in-
dex).
56
The literature values used when calculat-
ing the planes were taken from Cam-
bridge Crystallographic Data Centre
(CCDC).
57
Possibly the equatorial and axial orienta-
tion of the phenyl substituents as visible
in the solid state structure.
58
The quantitative formation of the mono-
cationic species was proved by
31
P-NMR.
59
Smith, J.A., Brzezinska, K. R., Valenti,
D. J., Wagener, K. B.,
Macromolecules
2000
,
33
, 3781.
60
Polyethenes with comparatively low mo-
lecular weights were synthesized by the
use of Ni and Pd systems with bis(di-
t
-
butylphosphino)methane ligands: a) Lip-
pert, F., Höhn, A., Schauss, E. (BASF
AG), WO 96/37522 and WO 96/37523; b)
Feldmann, J., Hauptmann, E., McCord,
E., Brookhart, M. S.
(Du Pont), WO 98/
47934.
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