N,N-Bis(diphenylphosphino)-1,2-dimethylpropylamine

Abstract

The diphenyl­phosphine groups in the title compound, C29H31NP2, are staggered relative to the PNP backbone. The N atom adopts an almost planar geometry with the two P atoms and the C atom attached to it, in order to accommodate the steric bulk of the phenyl groups and the alkyl group. Three C atoms of the 1,2-dimethylpropylamine group are disordered over two positions in a 9:1 ratio. The mol­ecules pack diagonally in the unit cell across the ac plane in a head-to-tail fashion.

Structural Characterization of N,NBis( diphenylphosphanyl)propylamine

“…1, appropriate bond lengths and angles are given in the caption. The molecular structure of 1 is comparable to those of the reported ones of the type Ph 2 PN(R)PPh 2 (R = benzyl [6], R = 1, 2-dimethylpropyl [7]). As found for the latter compounds, the diphenylphosphanyl groups are staggered relative to the PNP backbone.…”

Highly trans‐1,4‐specific polymerization of 1,3‐butadiene catalyzed by [2,6‐bis{(4S)‐ (−)‐isopropyl‐2‐oxazolin‐2‐yl}pyridine] chromium complex activated with modified methylaluminoxane

“…The molecular structures of 1 and 2 were determined using X‐ray crystallography (Figs 1 and 2, respectively). Although complex 2 has been known for many years,27 only the crystal structure of 2 including dimethylsulfoxide as a crystalline solvent has been determined 28. We obtained solvent‐free single crystals of 2 by the recrystallization of 2 from dimethylformamide/THF.…”

Crystal structure of N,N-bis(diphenylphosphanyl)cyclohexylamine, C30H31NP2

“…The modular structure of the ligands enables "tuning" of the catalyst activity and selectivity through systematic variation of the donor atoms, their substituents, and the ligand backbone framework. There are numerous examples of crystal structures of such PNP-pincer ligands [1][2][3][4][5][6] and metal complexes [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Diphosphinoamine (PNP) and other P donor ligands [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] with various substituents on both the P and N atoms have been applied to several catalytic reactions such as methoxycarbonylation [17], metathesis [18], hydroformylation [19] and C-H activation [24].…”