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Synthesis and Electronic Characterization of Iridium‐Aluminum and Rhodium‐Aluminum Heterobimetallic Complexes Bridged by 3‐Oxypyridine and 4‐Oxypyridine
Author(s) -
Charles R. Malcolm,
Tupkar Hrishikesh,
Helland Sarah D.,
Mercado Angel A.,
Eckenhoff William T.,
Schley Nathan D.,
DeYonker Nathan J.,
Brewster Timothy P.
Publication year - 2020
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.201901317
Subject(s) - chemistry , iridium , rhodium , transition metal , aluminium , ligand (biochemistry) , dichloromethane , bridge (graph theory) , characterization (materials science) , metal , polymer chemistry , inorganic chemistry , combinatorial chemistry , nanotechnology , organic chemistry , catalysis , medicine , biochemistry , materials science , receptor , solvent
We demonstrate the synthesis and characterization of regioisomeric late transition metal‐aluminum heterobimetallic complexes containing 3‐ and 4‐oxypyridine ligands which bridge between the aluminum and transition metal center (Rh or Ir). Combined experimental and theoretical data allow for direct comparison of the electronic effect of the two different aluminum‐containing ligands on the late transition metal center. In combination with electronic data regarding previously reported 2‐oxypyridine bridged systems, we report a measurable decrease in ligand donor power as the regiosubstitution of the oxypyridine bridge is varied from 2‐ to 4‐ to 3‐. In all cases, addition of aluminum is found have a minimal effect on the donor ability of the oxypyridine bridge in dichloromethane solution.