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Synthesis of Non‐Symmetric Ruthenium(II) POCOP Pincer Complexes and Their Bimetallic Derivatives by π‐Coordination of Arenophile Fragments
Author(s) -
RoqueRamires Manuel A.,
Shen Longzhu,
Le Lagadec Ronan
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.202000425
Subject(s) - chemistry , ruthenium , bimetallic strip , pincer movement , pincer ligand , ligand (biochemistry) , hydride , organometallic chemistry , medicinal chemistry , crystallography , chloride , stereochemistry , photochemistry , crystal structure , catalysis , organic chemistry , hydrogen , biochemistry , receptor
A series of neutral 16‐electron square pyramidal ruthenium(II) complexes of the general formula [Ru(POCOP)(X)(CO)] (X = Cl, H) have readily been obtained in good yields from [RuCl 2 (COD)] n and different POCOP pincer ligands based on the naphthoresorcinate backbone. The molecular structure of two of the compounds was unequivocally determined by single‐crystal X‐ray diffraction, showing different stereochemistries upon the coordination of chloride or hydride ligand. The observed discrepancies are explained by DFT calculations. The regiospecific η 6 ‐coordination of a second 12‐electron organometallic fragment on the exo aromatic ring of the POCOP pincer ligand was achieved under mild conditions, and the corresponding [(ML n )Ru(POCOP)(X)(CO)]PF 6 (ML n = [RuCp] + , [RuCp*] + and [FeCp*] + ) bimetallic sandwich‐like species were obtained as air‐stable solids.