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Synthesis and Characterization of Manganese(I) Carbonyl Complexes of the Type [(OC) 4 Mn{μ‐P( R )Aryl}] 2
Author(s) -
Mede Ralf,
Blohm Sascha,
Görls Helmar,
Westerhausen Matthias
Publication year - 2016
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.201600047
Subject(s) - manganese , chemistry , aryl , moiety , steric effects , carbon monoxide , metalation , medicinal chemistry , crystallography , stereochemistry , catalysis , organic chemistry , alkyl
Metalation of secondary phosphanes HP RR ′ [ R = R ′ = C 6 H 4 ‐4‐Me, C 6 H 3 ‐3,5‐Me 2 ( 3 ), C 6 H 4 ‐4‐NMe 2 ( 4 ); R / R ′ = Ph/ c Hex] with Mn 2 (CO) 10 in boiling xylene (mixture of isomers), until the evolution of gaseous carbon monoxide ceases, leads to the formation of the dinuclear complexes of the type [(OC) 4 Mn(μ‐P RR ′)] 2 [ R = R ′ = C 6 H 4 ‐4‐Me ( 5 ), C 6 H 3 ‐3,5‐Me 2 ( 6 ), R / R ′ = Ph/ c Hex ( 7 ), R = R ′ = C 6 H 4 ‐4‐NMe 2 ( 8 )] with poor to moderate yields. These manganese(I) complexes are only sparingly soluble or even nearly insoluble in hydrocarbons at room temperature. Planar four‐membered Mn 2 P 2 rings represent the central moiety with four carbonyl ligands at each manganese(I) atom. The steric demand of the P‐bound substituents influences the Mn–P bond lengths as well as the P–Mn–P bond angles.