Synthesis, structure and reactivity of stable dianionic organometallic complexes of Pt(IV). Crystal structure of [PEtPh 3] 2[ cis-Pt(C 6F 5) 2Cl 4] and [NBu 4mer-Pt(C 6F 5) 2Cl 3- (NH 2- p-C 6H 4CH 3)]
The stable dianionic complexes Q 2[ cis-Pt(C 6F 5) 2Cl 4] (Q=NBu 4 +, 1; PEtPh 3 +, 2) have obtained from reaction of the corresponding Q 2[ trans-Pt(C 6F 5) 2Cl 2] complexes with Cl 2 in CCl 4 solution. [PEtPh 3] 2[ cis-Pt(C 6F 5) 2Cl 4] is the first dianionic organometallic complex of Pt(IV) struc...
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Published in | Inorganica Chimica Acta Vol. 229; no. 1; pp. 291 - 298 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
1995
|
Subjects | |
Online Access | Get full text |
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Summary: | The stable dianionic complexes Q
2[
cis-Pt(C
6F
5)
2Cl
4] (Q=NBu
4
+,
1; PEtPh
3
+,
2) have obtained from reaction of the corresponding Q
2[
trans-Pt(C
6F
5)
2Cl
2] complexes with Cl
2 in CCl
4 solution. [PEtPh
3]
2[
cis-Pt(C
6F
5)
2Cl
4] is the first dianionic organometallic complex of Pt(IV) structurally characterized by X-ray diffraction. It crystallizes with two CH
2Cl
2 solvent molecules per complex molecule. The crystal system is monoclinic and the space group is
C2/
c (No. 15),
a = 23.648(5), b = 13.895(3), c = 17.651(4)
A
̊
, β = 106.42(3)°, V = 5563(2)
A
̊
3, Z = 4 (20 °C)
. [NBu
4]
2[
cis-Pt(C
6F
5)
2Cl
4] has been used as starting material in the synthesis of
[
NBu
4][mer-
Pt(
C
6
F
5)
2
Cl
3(
NH
2-p-
C
6
H
4
CH
3)]
,
3
. The crystal structure of this new stable Pt(IV) compound has been determined. It crystallizes in the monoclinic system, space group
P2
1/
n (No. 14),
a = 11.122(3), b = 23.150(3), c = 16.086(3)
A
̊
, β = 105.79(3)°, V = 3985(2)
A
̊
3, Z = 4 (20°C)
. The disposition of the two C
6F
5 groups is very similar in both molecules. This is a consequence of steric constraints imposed by the octahedral coordination of the platinum atom. |
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ISSN: | 0020-1693 1873-3255 |
DOI: | 10.1016/0020-1693(94)04256-U |