122039-27-4Relevant articles and documents
Three-Fold-Symmetric Selenium-Donor Metallaboratranes of Cobalt and Nickel
Holler, Stefan,Tüchler, Michael,Roschger, Michaela C.,Belaj, Ferdinand,Veiros, Luis F.,Kirchner, Karl,M?sch-Zanetti, Nadia C.
, p. 12670 - 12673 (2017)
A novel selenium-containing pyridazinyl-based soft scorpionate ligand (KTnse) was synthesized. It reacts with CoCl2 and NiCl2, yielding the first metallaboratrane complexes with selenium in their donor positions. Further substitution with Ag(OTf) or NaN3 allows isolation of the respective triflate or azide complexes. Reaction with Ag(OTf) leads in the case of nickel to a dinuclear, dicationic complex with a short Ni-Ni distance, while cobalt gave a mononuclear cationic species. Substitution of the chloride by azide yields with both metals the respective azide complexes. All compounds were characterized via single-crystal X-ray diffraction analysis. Density functional theory calculations on the chloride species point to oxidized cobalt(III) and nickel(III) centers.
N-Heterocyclic Carbene Adducts of Phenyldioxophosphorane and Its Heavier Sulfur and Selenium Analogues
Bockfeld, Dirk,Bannenberg, Thomas,Jones, Peter G.,Tamm, Matthias
supporting information, p. 3452 - 3458 (2017/08/07)
The reactions of the N-heterocyclic carbene–phenylphosphinidene adducts (NHC)PPh with dioxygen, elemental sulfur or selenium are reported. For NHC = 1,3,4,5-tetramethylimidazolin-2-ylidene (IMe), the corresponding complexes (IMe)PE2Ph of phenyl
A new synthesis of (PhPSe2)2 (woollins reagent) and its use in the synthesis of novel P-Se heterocycles
Gray, Ian P.,Bhattacharyya, Pravat,Slawin, Alexandra M. Z.,Woollins, J. Derek
, p. 6221 - 6227 (2007/10/03)
A new and improved method for the preparation of (PhPSe2) 2 (Woollins reagent (WR), 1) is reported. Reaction of dichlorophenylphosphine with Na2Se, (prepared from the reaction of elemental selenium and sodium in liquid ammonia) gives WR with excellent purity, high yield and on a larger scale than was previously possible. Four novel phosphorus-selenium heterocycles, including a spirocyclic heterocycle exhibiting a four-membered P2SeC ring, were obtained from the reaction of WR with two reactive substrates (diphenylcyclopropenone and methyl phenylpropiolate). Useful selenocarbonyl and thiocarbonyl compounds were obtained from the reaction of both WR and Lawesson's reagent with diphenylcyclopropenone. All new compounds were characterised spectroscopically and three demonstrative X-ray structures are reported.