New stable 2,3-dichloro,1,3-diphosphapropenes; synthesis and characterization

Abstract

Two novel diphosphapropenic compounds bearing two vicinal chlorine atoms on the P=C-P moiety have been obtained and completely characterized both through experimental (multinuclear NMR, HRMS, X-ray diffraction) and theoretical methods. These compounds are, due to their multiple coordination sites and the two halogen atoms, very interesting building blocks for new organometallic, cumulenic and coordination derivatives.

In silico modelling of chelate stabilized tetrylene derivatives

“…However, theoretical data reported for derivatives incorporating the P C–P S moiety are scarce. 9 Further insights into their features are required, as well as a systematic comparison between the PCPO and PCPS systems. The impact of R and R′ substituents on the electronic and structural properties of PCPX derivatives is evaluated, allowing thus an improved design of targeted ligands.…”

“…The presence of halogen substituents on one of the phosphorus atoms, or on the central carbon atom, makes such ligands as suitable building blocks for larger organometallic derivatives. 9,10 Similarly phosphaalkenyl systems containing the P]C-P moiety have previously been employed as ligands for transition metal complexes. 11 Monodentate or bidentate coordination compounds of P]C-P ligands with d-metals, e.g., palladium, tungsten 12 or gold, 13 involving one or both of the phosphorus atoms have been isolated and fully characterized.…”