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Title: Synthesis and characterization of rhodium, iridium, and palladium complexes of a diarylamido-based PNSb pincer ligand
A new diarylmido-based pincer proto ligand ( iPrPNHSbPh ) with one –PPr i 2 and one –SbPh 2 side donor has been synthesized. Three complexes of its amido form were prepared using standard metalation techniques: ( iPrPNSbPh ) PdCl , ( iPrPNSbPh ) RhCO , and ( iPrPNSbPh ) Ir(COE) , where COE = cis -cyclooctene. These complexes were compared with their previously reported analogs incorporating a –PPh 2 side donor in place of –SbPh 2 . The –SbPh 2 donor arm is less donating towards the metal and is less strongly trans -influencing, based on the structural and IR spectroscopic analysis of the Rh complexes. The redox potential of the Pd complexes is only marginally affected by the change from –PPh 2 to –SbPh 2 . (iPrPNSbPh)Ir(COE) proved to be a slower and less selective catalyst in the dehydrogenative borylation of terminal alkynes (DHBTA) than its –PPh 2 analog.  more » « less
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Author(s) / Creator(s):
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Date Published:
Journal Name:
Dalton Transactions
Page Range / eLocation ID:
11619 to 11624
Medium: X
Sponsoring Org:
National Science Foundation
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