[N,N-Bis(diphenylphosphino)propylamine-κ²P,P′]dichloridoplatinum(II)

Abstract

The Pt(II) atom in the title compound, [PtCl2(C27H27NP2)], has a highly distorted square-planar geometry, as evidenced by the P—Pt—P bite angle [72.4 (1)°]. The strain in the complex is further illustrated by the distorted tetra­hedral angles of the P atoms, which range between 93.5 (1) and 122.2 (1)°. It is of inter­est to note that the N atom has to adopt an almost planar geometry with the two P atoms and the C atom attached to it [it is displaced by 0.093 (2) Å from the CP2 plane] in order to accommodate the steric bulk of the phenyl groups and the alkyl group of the ligand coordinated to the PtII centre. The mol­ecules pack in horizontal rows across the bc plane. C—H⋯Cl hydrogen bonds stabilize the crystal packing.

Bis[N,N-bis(diphenylphosphanyl)pentylamine-κ2P,P′]platinum(II) bis(hexafluoridophosphate) dichloromethane disolvate

“…Colourless crystals of the title compound crystallize with two hexafluoridophosphate anions and two dichloromethane solvent molecules, of which one displays a 51% possitional disorder on one chloride atom. In the title compound, all bond distances and angles are considered to be normal and fall within the range reported for similar complexes (Farrar et al, 1995;Dyson et al, 2004;Cloete et al, 2010). The square-planar geometry around the Pt II metal centre is highly distorted with P1-Pt-P2 and P3-Pt-P4 bite angles of 70.45 (3) and 70.64 (3) °, respectively.…”

“…For related platinum(II) complexes, see: Farrar & Browning (1995); Dyson et al (2004); Cloete et al (2010). For related diphenylphosphanyl ligands, see: Keat et al (1981); Cloete et al (2008Cloete et al ( , 2009); Cotton et al (1996); Fei et al (2003).…”

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].…”

N,N-Bis(diphenylphosphanyl)cyclobutanamine

“…For similar structures, see: Keat et al (1981); Cotton et al (1996); Fei et al (2003); Cloete et al (2008Cloete et al ( , 2009Cloete et al ( , 2010; Engelbrecht et al (2010a,b). For diphosphinoamine (PNP) and other P-donor ligands, see: Muller et al (2008); Purcell et al (1995); Otto & Roodt (2001); Otto et al (2005).…”

“…Diphosphinoamine (PNP) and other P donor ligands (Muller et al, 2008;Purcell et al, 1995;Otto et al, 2005;Otto & Roodt, 2001) with various substituents on both the P and N atoms form part of ongoing research in different catalytic olefin transformation reactions such as hydroformylation (Haumann et al, 2004;Crous et al, 2005), metathesis (Booyens et al) methoxycarbonylation (Ferreira et al, 2007) and tetramerization (Cloete et al, 2011). In the title compound, C 29 H 29 NP 2 , Fig.1, all bond distances and angles fall within the range for similar complexes (Keat et al, 1981;Cotton et al, 1996;Fei et al, 2003;Cloete et al, 2008Cloete et al, , 2009Cloete et al, , 2010Engelbrecht et al, 2010aEngelbrecht et al, , 2010b.…”