High valent transition metal chemistry. Synthesis and characterization of an intermediate-spin iron(IV) complex of a strong .pi.-acid ligand

1992 ◽  
Vol 114 (22) ◽  
pp. 8724-8725 ◽  
Author(s):  
Terrence J. Collins ◽  
Brian G. Fox ◽  
Zheng Guo Hu ◽  
Kimberly L. Kostka ◽  
Eckard Munck ◽  
...  
Keyword(s):  
Transition Metal ◽  
Synthesis And Characterization ◽  
Transition Metal Chemistry ◽  
Metal Chemistry ◽  
Acid Ligand ◽  
Intermediate Spin ◽  
High Valent

High-valent transition metal chemistry. Moessbauer and EPR studies of high-spin (S = 2) iron(IV) and intermediate-spin (S = 3/2) iron(III) complexes with a macrocyclic tetraamido-N ligand

1993 ◽  
Vol 115 (15) ◽  
pp. 6746-6757 ◽  
Author(s):  
Kimberly L. Kostka ◽  
Brian G. Fox ◽  
Michael P. Hendrich ◽  
Terrence J. Collins ◽  
Clifton E. F. Rickard ◽  
...  
Keyword(s):  
Transition Metal ◽  
High Spin ◽  
Transition Metal Chemistry ◽  
Metal Chemistry ◽  
Intermediate Spin ◽  
High Valent

scholarly journals Syntheses and Characterization of the First Cycloheptatrienyl Transition-Metal Complexes with a M-CF3 Bond

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6838
Author(s):  
Christos Lampropoulos ◽  
Gabriel Rashad ◽  
Chris Douvris
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Organometallic Chemistry ◽  
Transition Metal Complexes ◽  
Thermal Instability ◽  
Synthesis And Characterization ◽  
Metal Chemistry ◽  
Cyclopentadienyl Ligands ◽  
Considerable Depth

The organometallic chemistry of metal complexes with organocyclic ligands of higher than five hapticity is much more lacking than the chemistry of metal complexes with η5-cyclopentadienyl ligands, which has been explored in considerable depth, resulting in novel advances. The main reason for this is stability. In particular, reports indicate that (η7-C7H7)MLn complexes are considerably less stable than analogous (η5-C5H5)MLn. In perfluoroalkyl metal chemistry, there is currently no reported (η7-C7H7)MLn derivative, whereas a number of alkylated ones are known and important conclusions have been drawn about their stability. Responding to this void, and using Morrison’s trifluoromethylating reagent, the present study reports the synthesis and characterization of the first cycloheptatrienyl molybdenum complexes bearing the trifluoromethyl moiety; (η7-C7H7)Mo(CO)2CF3 (I), and (η7-C7H7)Mo(CO)(PMe3)CF3 (II) and discusses their low thermal instability.

Sign in / Sign up

Export Citation Format

Share Document