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Mixed Metal Acetylides: The Pt II Aryl Acetylide “[PtC 6 H 2 (CH 2 NMe 2 ) 2 2,6‐(C≡C)‐4]” as a Connective Fragment
Author(s) -
Back Stephan,
Gossage Robert A.,
Lang Heinrich,
Koten Gerard van
Publication year - 2000
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 - 10.1002/1099-0682(200007)2000:7<1457::aid-ejic1457>3.0.co;2-f
Subject(s) - chemistry , acetylide , platinum , aryl , metal , molecule , medicinal chemistry , stereochemistry , crystallography , catalysis , organic chemistry , alkyl
Using Me 3 SiC≡C{Pt}Cl ( 1 ; Me 3 SiC≡C{Pt} = [Pt(C 6 H 2 {CH 2 NMe 2 } 2 ‐2,6‐{C≡CSiMe 3 }‐4] + ) a series of platinum monoacetylides of the type XC≡C{Pt}C≡CR [X = SiMe 3 : 2 , R = Ph; 3 , R = (η 5 ‐C 5 H 4 )Fe(η 5 ‐C 5 H 5 ) (abbreviated as Fc); 4 , R = C 6 H 4 CN‐4; 5 , R = C 6 H 4 (C≡CSnMe 3 )‐4; X = H: 7 , R = Ph; 8 , R = Fc; 9 , R = C 6 H 4 CN‐4] have been prepared. Studies directed towards the coordinative properties of the C 2 unit of 1 have been carried out and heterotrimetallic [μ‐(Me 3 SiC≡C{Pt}Cl][Co 2 (CO) 6 ] ( 10 ) could be synthesised. The successful attachment of 1 to a Ph 3 PAu unit leads to linear Ph 3 PAuC≡C{Pt}Cl ( 11 ). Treatment of 11 with FcC≡CSnMe 3 produces the heterotrimetallic rigid‐rod shaped complex Ph 3 PAuC≡C{Pt}C≡CFc ( 13 ). Cyclic voltammetric studies carried out on these Ph 3 PAu‐capped molecules show that the attachment of an organometallic entity on either side of the C≡C{Pt} fragment leads to a facilitation of the Pt II /Pt IV oxidation.