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Half‐Sandwich Pentamethylcyclopentadienyl Iridium Complexes Containing Sulfido and Selenido Ligands X‐Ray Crystal Structures of Cp * Ir(PMe 3 )(S 6 ) and Cp * Ir(PMe 3 )(Se 4 )
Author(s) -
Herberhold Max,
Ji GuoXin,
Rheingold Arnold L.
Publication year - 1991
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19911241016
Subject(s) - chemistry , iridium , yield (engineering) , crystallography , ligand (biochemistry) , x ray crystallography , crystal structure , chalcogenide , x ray , stereochemistry , diffraction , catalysis , organic chemistry , biochemistry , materials science , receptor , physics , quantum mechanics , optics , metallurgy
Cp * Ir(PMe 3 )Cl 2 ( 1 ) reacts with chalcogenide ligand sources such as (NH 4 )S x (x ≈ 10), (NEt 4 ) 2 Se 6 , and H 2 Se to yield the half‐sandwich complexes Cp * Ir(PMe 3 )(S n ) [ n = 4 ( 2a ), 6 ( 4a )] and Cp * Ir(PMe 3 )(Se n ) [n = 2 ( 5b ), 4 ( 2b )]. Desulfurization of 4a by PPh3 leads to Cp * Ir(PMe 3 )(S 5 ) ( 3a ), while both 4a and 3a react with excess P( n Bu) 3 to give 2a . The geometries of the cyclo ‐oligochalcogenide ligands in 4a and 2b have been determined by X‐ray crystallography.