Premium
Open Platinum Aggregate Frameworks with Overhead Dithiolate Bridges
Author(s) -
Chong Siew Huay,
Henderson William,
Hor T. S. Andy
Publication year - 2007
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200700620
Subject(s) - chemistry , intramolecular force , platinum , stereochemistry , single crystal , crystallography , crystal structure , sulfide , alkylation , medicinal chemistry , catalysis , organic chemistry
A convenient method has been developed to bring together two discrete moieties of [Pt 2 (μ‐S) 2 (PPh 3 ) 4 ] to give an open Pt 4 aggregate of Pt 2 ··· (spacer) ··· Pt 2 , as exemplified in the isolation of [(PPh 3 ) 4 Pt 2 (μ‐S)(μ‐SRS)(μ‐S)Pt 2 (PPh 3 ) 4 ](PF 6 ) 2 [R = m ‐CH 2 C 6 H 4 CH 2 , p ‐CH 2 C 6 H 4 CH 2 , CH 2 C 10 H 6 CH 2 , and CH 2 (C 6 H 4 ) 2 CH 2 ]. The spacer is a dithiolate with an extended skeletal backbone formed from the alkylation of sulfide with a suitable dibromo‐organic compound. This synthetic methodology can tolerate a range of conformationally contrasting thiolate substituents with different chemical functionalities. Shorter or stereochemically more restrictive spacers could opt to be an intramolecular bridge over the Pt 2 core, as given in [Pt 2 (μ‐S‐ o ‐CH 2 C 6 H 4 ‐C 6 H 4 CH 2 S)(PPh 3 ) 4 ](PF 6 ) 2 . A few representative complexes have been characterized by single‐crystal X‐ray diffraction analysis.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)