The selenium
centers of [Pt
2(
![](/images/entities/mgr.gif)
-Se)
2(PPh
3)
4] are subje
ct to ele
ctrophili
c atta
ck from variousorgani
c halides. Rea
ctions with MeI,
n-BuCl,
chars/alpha.gif" BORDER=0>,
chars/alpha.gif" BORDER=0>'-di
chloro-
p-xylene, and
chars/alpha.gif" BORDER=0>,
chars/alpha.gif" BORDER=0>'-di
chloro-
o-xylenegive [Pt
2(
![](/images/entities/mgr.gif)
-Se)(
![](/images/entities/mgr.gif)
-SeMe)(PPh
3)
4]
+, [Pt
2(
![](/images/entities/mgr.gif)
-Se)(
![](/images/entities/mgr.gif)
-SeBu)(PPh
3)
4]
+, [Pt
2(
![](/images/entities/mgr.gif)
-Se)(
![](/images/entities/mgr.gif)
-SeCH
2C
6H
4CH
2Cl)(PPh
3)
4]
+, and [Pt
2(
![](/images/entities/mgr.gif)
-SeCH
2C
6H
4CH
2Se)(PPh
3)
4]
2+, respe
ctively, preserving the dinu
clear
core and giving rise to new selenium-derivatized ligand
complexes. Rea
ction with oxalyl
chloride gives [Pt(
![](/images/gif<font color=)
chars/eta.gif" BORDER=0 >
2-Se
2C
2O
2-
Se,
Se')(PPh
3)
2], leading to the disintegration of the
core to amononu
clear
complex supported by a new
chelating selenium donor ligand. Rea
ctions withmalonyl
chloride and su
ccinyl
chloride give [(COCH
2COCl)Se]
2 and [(COCH
2CH
2COCl)Se]
2respe
ctively, leading to
complex disintegration and liberation of new selenium materials.The
crystal stru
ctures of the aggregates [Pt
2(
![](/images/entities/mgr.gif)
-Se)(
![](/images/entities/mgr.gif)
-SeMe)(PPh
3)
4][PF
6], [Pt
2(
3-Se)
2(PPh
3)
4(CH
2C
6H
4CH
2)][PF
6]
1.25[Cl]
0.75, and [Pt(
![](/images/gif<font color=)
chars/eta.gif" BORDER=0 >
2-Se
2C
2O
2-
Se,
Se')(PPh
3)
2] are des
cribed. The potentialof using [Pt
2(
![](/images/entities/mgr.gif)
-Se)
2(PPh
3)
4] as a sour
ce for metal-assisted synthesis of new and unusualorganoselenium
compounds is dis
cussed.