Synthesis of diphenyl-(2-thienyl)phosphine, its chalcogenide derivatives and a series of novel complexes of lanthanide nitrates and triflates

Abstract

Three and four-coordinate, pseudo-octahedral lanthanide complexes of novel aryl phosphine oxide ligands are structurally reported.

N-(2-(Diphenylphosphino)ethyl)-2-alkyl-5,6,7,8-tetrahydro-quinolin-8-amines iron(ii) complexes: structural diversity and the ring opening polymerization of ε-caprolactone

“…† The Xray diffraction of these yellow crystal showed that Fe4 ′ is a bisligated iron(II) salt with the anion [FeCl 4 ] − , in which iron in the cation is six-coordinated with distorted octahedral geometry; the apical sites are occupied by two O atoms, with the N atoms in the equatorial sites. Besides, the bond lengths of the P]O bond are 1.512(3) (Å) and 1.5083( 14) (Å), respectively, which falls in the range of the bond length of the P]O (+5) reported in the literature, [61][62][63] further indicating that phosphorus(III) is oxidized into phosphorus(V). The reason for this phenomenon is not clear and needs to be further explored.…”

A mixed phosphine sulfide/selenide structure as an instructional example for how to evaluate the quality of a model

“…Our research group has synthesized a number of phosphine chalogenide derivatives and explored their chemistry in regard to their coordination with both d-block and f-block metals (Luster et al, 2022;Mugemana et al, 2018;Morse et al, 2016;Neils et al, 2022). A few years ago, we worked with the rigid diphosphine cis-1,2-bis(diphenylphosphine)ethylene 1 (cisdppe), and developed conditions for the synthesis of the disulfide 2 (Rawls et al, 2023) and the di-selenide 3 (Jones et al, 2015) (Fig.…”

Crystal structure of chlorido[diphenyl(thiophen-2-yl)phosphine-κP]gold(I)

“…If we consider gold(I)-PAr 3 complexes, structural diversity of the phosphine ligand has led to properties such as selective catalysis for cycloisomerization reactions (Christian et al, 2017), triboluminescence (Kuchison et al, 2009), and enzyme inhibition (Zhang et al, 2014;Fonteh & Meyer, 2009). To this end, our group has been developing synthetic routes to unsymmetric triarylphosphines, their chalcogenide derivatives and the resultant metal-ligand complexes (Luster et al, 2022). While attempting to prepare a complex between gold(I) and the selenide derivative of diphenyl-2-thienylphosphine, we isolated single crystals of the title compound as a decomposition product.…”

“…A small vial was charged with diphenyl(2-thienyl)phosphine selenide (10-15 mg; Luster et al, 2022) and a stoichiometric amount of chloro(tetrahydrothiophene)gold(I). The solids were dissolved in 1 mL of CDCl 3 , and the reaction mixture was transferred to an NMR tube.…”