480430-91-9

Upstream product

• 480431-08-1 [(1-benzylindenyl)Ni(PPh₃)Cl] 
• 2923-28-6 silver trifluoromethanesulfonate 
• 500362-66-3 [(1-benzylindenyl)Ni(PPh₃)(thienyl)] 
• 1493-13-6 trifluorormethanesulfonic acid 

Downstream Products

• 480431-24-1 [(1-benzylindenyl)Ni(PPh₃)(PMe₃)] triflate 
• 480431-18-3 [(1-benzylindenyl)Ni(PPh₃)(pyridine)] triflate 
• 480431-20-7 [(1-benzylindenyl)Ni(PPh₃)(CNC(CH₃)3)] triflate 
• 480431-14-9 [(1-benzylindenyl)Ni(PPh₃)(PhCN)] triflate 
• 480431-16-1 [(1-benzylindenyl)Ni(PPh₃)(CO)] triflate 
• 480431-22-9 [(1-benzylindenyl)Ni(PPh₃)2] triflate 
• 480431-12-7 [(1-benzylindenyl)Ni(PPh₃)(acetonitrile)] triflate 

Relevant academic research and scientific papers

Preparation, characterization, and reactivities of thienyl nickel complexes bearing indenyl ligands

The complexes (1-R, 2-R'-indenyl)NiPPh3(thienyl) (R'=H, R=Me (1); Et (2); i-Pr (3); CH2Ph (4); R'=Ph, R=Me (5)) have been prepared and characterized by spectroscopic techniques and, in the case of 1, 2 and 5, by X-ray crystallographic studies. When combined with MAO, these compounds catalyze the polymerization of phenylacetylene to cis-transoidal poly(phenylacetylene) with Mw in the range of 5-7.5 × 104 Da. NMR studies have revealed that MAO methylates these complexes without ionizing the Ni-thienyl bond; this implies that the polymerization reactions likely follow a non-cationic mechanism similar to that catalyzed by the corresponding Ni-CC-Ph complexes studied previously. Complexes 1-5 reacted with CF3SO3H to produce the corresponding NiOSO2CF3 compounds by protonation at the α-C of the thienyl moiety. The compound (1-Bz-indenyl)Ni(PPh3)(OSO2CF3) (9) has been isolated and fully characterized.

Nickel-triflate complexes as precursors to reactive cations: Preparation and reactivities of (1-R-mdenyl)Ni(PPh3)(OSO2CF3)

The complexes (1-R-indenyl)Ni(PPh3)(OTf) (OTf = OSO2CF3; R = Et (1), i-Pr (2), and Bz (3)) have been prepared by reacting the corresponding Ni-thienyl or Ni-Cl precursors with HOTf (triflic acid) or AgOTf, respectively. The triflate ligand in these complexes undergoes facile displacement by various substrates or ligands to facilitate (a) catalytic dimerization of ethylene, isomerization of 1-hexene, and polymerization of phenylacetylene, or (b) formation of the cationic complexes [(1-R-indenyl)(PPh3)Ni(L)]+ (R = i-Pr (a) and CH3Ph (b); L = CH3CN (4), PhCN (5), CO (6), Py (7), CNC(CH3)3 (8), PPh3 (9), and PMe3 (10)). Compounds 1-10 have been characterized spectroscopically and, in the case of complexes 2, 4a, and 8a, by single-crystal X-ray crystallography.