Preparation and Reactivities of PCP-Type Pincer Complexes of Nickel. Impact of Different Ligand Skeletons and Phosphine Substituents

• Published in: Organometallics Vol. 27; no. 21; pp. 5723 - 5732
• Main Authors: Castonguay, Annie, Beauchamp, André L, Zargarian, Davit
• Format: Journal Article
• Language: English
• Published: WASHINGTON American Chemical Society 10.11.2008; Amer Chemical Soc
• Subjects: Chemistry; Chemistry, Inorganic & Nuclear; Chemistry, Organic; Physical Sciences; Science & Technology; PALLADIUM; CATALYSIS; INDENYL COMPLEXES; HYDROSILYLATION; ME; POLYMERIZATION; CRYSTAL; OLIGOMERIZATION; DIPHOSPHINITO POCOP COMPLEXES; NI-II

Reaction of the diphosphine ligand i-Pr2P(CH2)5P(i-Pr)2 with NiBr2 at 110 °C gives a mixture of the 16-membered bimetallacycle {i-Pr2P(CH2)5P(i-Pr)2}2Ni2Br4, 1, and the pincer-type complex {(i-Pr2PCH2CH2)2CH}NiBr, 2; the latter can also be obtained by heating 1 in the presence of 4-(dimethylamino)py...