Dyer, Philip W. published the artcileRigid N-Phosphino Guanidine P,N Ligands and Their Use in Nickel-Catalyzed Ethylene Oligomerization, Name: Dimesitylphosphine oxide, the publication is Organometallics (2008), 27(19), 5082-5087, database is CAplus.
The rigid bidentate P,N-ligands I (3a–d, R substituent: a, Ph; b, mesityl; c, N-i-Pr2; d, NPh2), each with a 7-phosphino-1,5,7-triazabicyclo[4.4.0]dec-5-ene skeleton, are readily prepared in high yields and were used in the preparation of the Ni complexes [NiBr2(3a–d)] (4a–d). The derivatives 4a,d are both diamagnetic, while their counterparts 4b,c are paramagnetic with values of ¦Ìeff(300 K) of 2.05 and 2.10 ¦ÌB, resp. The structure of 4a was determined in the solid state by x-ray diffraction, which confirmed the ¦Ê2P,N coordination of 3a and the essentially square-planar geometry about Ni. In combination with EtAlCl2 the Ni(II) complexes of 4b–d are active ethylene oligomerization initiators (C2H4, 1 bar; Ni:Al = 1:14; toluene), affording varying mixtures of butenes, hexenes, and octenes (trace), depending on the nature of the P-donor, but with a reasonable selectivity toward C4 with complex 4c. In contrast, under identical reaction conditions complex 4a gives rise to products resulting from a sequence of ethylene oligomerization and subsequent Friedel-Crafts alkylation of the toluene solvent. Notably, no activity toward ethylene (1 bar) was observed for 4/MAO (Ni:Al = 1:15 or 1:500).
Organometallics published new progress about 23897-16-7. 23897-16-7 belongs to catalysis-chemistry, auxiliary class Aryl phosphine ligand,Mono-phosphine Ligands, name is Dimesitylphosphine oxide, and the molecular formula is C18H23OP, Name: Dimesitylphosphine oxide.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia