Chiral Chelate Ligands Based on a Neopentane Framework; Introducing Indenyl and Fluorenyl Donor Groups

Cyclopentadienylmetal Complexes Bearing Pendant Phosphorus, Arsenic, and Sulfur Ligands

“…Since the completion of this review, some more publications of relevance to the topic have come to our attention. These include ligands − as well as complexes of titanium, ,, zirconium, ,, chromium, tungsten, molybdenum, iron, ruthenium, and rhodium. ,− …”

An Unsymmetrical Tripodal Ligand with NOS2-Donor Set: Coordination Chemistry with Nickel(II) and Zinc(II)

“…The substitution of the ligand arms in a tripodal ligand with different donor groups has recently attracted special interest since such derivatives are of particular interest for the modeling of unsymmetrically coordinated metal ions in the active centers of metalloproteines. Tripodal ligands of the type CH 3 C[(CH 2 X)(CH 2 Y)(CH 2 Z)] (X, Y, Z = PR 2 , P , NR 2 , SR, and OR) have been reported by Huttner …”

Redox Chemistry of Bis(oxazolinyl)cyclopentadienyl and -fluorenyl Rhodium and Iridium Organometallic Compounds

“…The second approach, ring slip of the cyclopentadienyl group from pentahapto to tri- or monohapto, could also allow the supporting ligand to respond to electronic changes at the metal center. Indenyl (Ind) and fluorenyl (Flu) derivatives provide coordination modes and reactivity patterns that are difficult for the parent Cp ligand system to access. − A derivative combining bis­(oxazoline) and fluorenyl groups could potentially coordinate in a piano-stool configuration, bidentate C,N (Chart B, bottom), or tridentate C,N,N modes, and these coordination modes could support the multiple electronic configurations of redox-active metal centers. In addition, we thought flexibility within the anionic π donor group, via ring slip, could allow reversible coordination of pendent oxazoline groups in substitution reactions of donor ligands.…”