Synthesis and coordination of 2-diphenylphosphinothiophenocarboxamide and bis(2,5-diphenylphosphinepicolinamide)

Structural Diversity of Lithium, Sodium, and Potassium Complexes of N‐Mesityl‐P,P‐diphenylphosphoryl Amide

“…On the one hand, the P=O bond lengths of these electroneutral compounds [ A : 147.5(2), B : 147.8(2), C : 145.6(3), D : 148.9(1) pm] are slightly smaller than those of the anionic phosphoryl amides. On the other hand, the P–N distances of the neutral phosphinic amides [ A : 168.9(3), B : 168.3(2), C : 169.2(3), D : 165.3(2) pm] are significantly larger than observed for the alkali metal complexes 2 to 4 . This finding suggests that the negative charge is dominantly localized on the nitrogen atom enhancing the electrostatic attraction between a positively polarized phosphorus atom and negatively charged nitrogen functionality.…”

Organophosphines in Cis-PtP2CCl Derivatives Structural Aspects

“…Cis-Pt(η 1 -PL) 2 (η 1 -CL)(η In seventeen examples, only monodentate ligands form cis-configurations with an inner coordination sphere of PtP 2 CCl type. These are mostly colorless or yellow, and crystallize in three crystal systems: triclinic (3), orthorhombic (5) and monoclinic (9) [11,12] [20], and [Pt{P(η 2 -C 7 H 5 NO)Ph} 2 (Me)(Cl)]Pr i OH [21]. The structure of [Pt(PPh 3 ) 2 {η 1 -C 8 H 12 N 2 }(Cl)] + [17] is shown in Figure 1 as an example.…”

“…[Pt(PMe3)2{η 1 [11,12] [15], [Pt(PPh3)2{η 1 -C11H19N2}(Cl)]BF4.CH2Cl2 [15], [Pt(PPh3)2{η 1 -C10H11ClN2SSi}(Cl)]C4H8O [16], [Pt(PPh3)2{η 1 -C8H12N2}(Cl)]BF4 [17], [Pt{P(H)Mes2}2(Me)(Cl)] [18], [Pt(Ph2PC≡CPh)2(Me)(Cl)].0.5CH2Cl2 [19], [Pt{P(NC5H4OS)Ph2}2(Me)(Cl)]CHCl3 [20], and [Pt{P(η 2 -C7H5NO)Ph}2(Me)(Cl)]Pr i OH [21]. The structure of [Pt(PPh3)2{η 1 -C8H12N2}(Cl)] + [17] is shown in Figure 1 as an example.…”

Phenylamino (diphenyl)phosphine selenide: supramolecular aggregation via weak N-H…Se, C-H…π and π…π interactions

“…[8][9][10] The values of P=Se bonds in phosphine selenides range from 2.109(5) Å in tri-mtolylphosphine selenide, 11 2.106(1) and 2.11 Å in triphenylphosphine selenides 12,13 , and 2.1055(5) Å in 1,4-butylenebis(diphenylphosphine selenide), 14 respectively, this could indicate that a neighbourhood of nitrogen atom does not elongate this distance. The P-N bond length of 1.662(3) Å is considerably shorter than a single-bond length of 1.78(6) Å [see 10b, 15 As Balakrishna concludes, the P-N bonding distance has a multiple character because the P V center has accepted much of the lone-pair electron density from the backbone N atom. 16 The geometry around the nitrogen atom is distinctly planar, with sum of the valency angles being 358.7°.…”