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Transition metal complexes supported by pyrrolide and imidazoline ligands with pyridine donors

Sampson, Jessica and Choi, Gyeongshin and Akhtar, Muhammad Naseem and Jaseer, E. A. and Theravalappil, Rajesh and Al-Muallem, Hasan A. and Agapie, Theodor (2018) Transition metal complexes supported by pyrrolide and imidazoline ligands with pyridine donors. In: 256th American Chemical Society National Meeting & Exposition, 19-23 August 2018, Boston, MA.

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Meridonal proligands featuring central pyrrolide and imidazoline moieties flanked by two pyridine donors with arene substituents ortho to N have been synthesized and their coordination chem. complexes of di-, tri-, and tetravalent transition metals explored. These ligands show variable coordination modes as a function of metal and redox state. Yttrium complexes of the dipyridyl pyrrolide (DPP) ligand show tridentate binding in the solid state and π-stacking with substituents such as indolide. The DPP Y dialkyl complex promotes C-H activation of the Me group of 2,6-lutidine resulting in C-C bond formation with pendant arene substituents. The DPP-supported tris(dimethylamido) Ti complex shows dissocn. of one pyridine donor in the solid state. In the presence of alkyl aluminum reagents, DPP Ti and Zr dimethylamido complexes act as catalysts for the polymn. of ethylene. Bisligated six-coordinate Fe(II) complexes supported by two DPP ligands or two dipyridyl imidazoline (DPC) ligands show π-stacking interactions between the ligand backbone and arene substituents. Redn. of the [Fe(DPC)_2]^(2+) complex by two electrons affords a neutral fourcoordinate complex resulting from dissocn. of two pyridine arms.

Item Type:Conference or Workshop Item (Paper)
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Theravalappil, Rajesh0000-0002-6022-6461
Agapie, Theodor0000-0002-9692-7614
Additional Information:© 2018 American Chemical Society.
Record Number:CaltechAUTHORS:20181109-153905545
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90812
Deposited By: Tony Diaz
Deposited On:13 Nov 2018 22:33
Last Modified:03 Oct 2019 20:28

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