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Palladium(II) and Platinum(II) Complexes with Bisphosphanes, [S 2 C=C(CN) 2 ] 2– and [Se 2 C=C(CN) 2 ] 2– as Chelating Ligands
Author(s) -
Scheller Lothar,
Werner Helmut
Publication year - 2012
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201100375
Subject(s) - palladium , platinum , chemistry , ligand (biochemistry) , medicinal chemistry , cyclic voltammetry , electrochemistry , stereochemistry , yield (engineering) , crystallography , catalysis , electrode , organic chemistry , materials science , receptor , metallurgy , biochemistry
The palladium(II) and platin(II) 1, 1‐dicyanoethylene‐2, 2‐dithiolates [(L–L) M {S 2 C=C(CN) 2 }] ( M = Pd: L–L = dppm, dppe, dcpe, dpmb; M = Pt: dppe, dcpe, dpmb) were prepared either from[(L–L) M Cl 2 ] and K 2 [S 2 C=C(CN) 2 ] or from [(PPh 3 ) 2 M {S 2 C=C(CN) 2 }] and the bisphosphane. Moreover, [(dppe)Pt{S 2 C=C(CN) 2 }]was obtained from [(1, 5‐C 8 H 12 )Pt{S 2 C=C(CN) 2 }] and dppeby ligand exchange. The 1, 1‐dicyanoethylene‐2, 2‐diselenolates[(dppe) M {Se 2 C=C(CN) 2 }] ( M = Pd, Pt) were prepared from[(dppe) M Cl 2 ] and K 2 [Se 2 C=C(CN) 2 ]. The oxidation potentials of the square‐planar palladium and platinum complexes were determined by cyclic voltammetry. The reaction of [(dcpe)Pd(S 2 C=O)] with TCNE led to a ligand fragment exchange and gave the 1, 1‐dicyanoethylene‐2, 2‐dithiolate [(dcpe)Pd{S 2 C=C(CN) 2 }] in good yield.