Binuclear cyclopalladated pincer compounds bridged by ditopic nitrogenated ligands
摘要:
The binuclear cyclopalladated compounds [(SCS)Pd-pz-Pd(SCS)][BF4](2) (pz = pyrazine) 2a, [(SCS)Pd-bipy-Pd(SCS)][BF4](2) (bipy = 4,4'-bipyridine) 2b, [(SCS)Pd-dcb-Pd(SCS)][BF4](2) (dcb = 1,4-dicyanobenzene) 2c and [(SCS)Pd-tmeda-Pd(SCS)][BF4](2) (tmeda = N,N,N',N'-tetramethylethylenediamine) 2d (SCS = {C6H3-2,6-(CH2SC6H4F-4)(2)}) were synthesized by a substitution reaction between the pincer unit [Pd(C6H3-2,6-(CH2SC6H4F-4)(2))Cl] 1 and the corresponding bidentate nitrogenated ligands. The topology of the bridging ligand between both pincer units induces the aggregation of the organometallic cations in the solid state. The X-ray diffraction molecular structures of complexes 2a and 2d are also reported. (C) 2011 Elsevier B.V. All rights reserved.
Palladium(
II
) Compounds with Fluorinated Pincer‐Type (SCS) Ligands: X‐ray Structures of C
6
H
4
‐1,3‐(CH
2
SC
6
H
4
F‐4)
2
and [PdCl(SCS–R
f
)] [R
f
= C
6
H
4
F‐2, C
6
H
4
F‐3, C
6
H
4
F‐4, C
6
H
4
(CF
3
)‐2, and C
6
H
4
(CF
3
)‐4]