The preparation and X-ray structure of Pt(Se3N)Cl(PMe2Ph)

A Mononuclear Iron(II) Bis(guanidinate) Complex: Synthesis, Structure, and Reactivity

“…It is noted that Se–N bond lengths reported in the literature fall within the range of 1.68 Å to 1.90 Å . A few interesting examples are [Se{N(SiMe 3 ) 2 } 2 ] [1.869(2) Å], [O = Se(µ‐NBu t ) 2 Se = O] [1.881(2) Å], and [Pt(Se 3 N)(PMe 2 Ph)Cl] [1.71(2) Å and 1.81(2) Å] . Referring to the two HGua – ligands in 10 , all of the three nitrogen atoms of the CN 3 core exhibit planar geometry.…”

4. Selenium– and tellurium–nitrogen reagents

“…By contrast, the pyrolysis of Se4N4 under vacuum at temperatures up to 220 o C results in decomposition to elemental selenium and N2 gas [20]. Although the binary selenium and [PtCl(Se2N2H)(PMe2Ph)]Cl, which were separated (in low yields) by chromatography [23,24] ( CH2Cl2, which was isolated in 30 % yield, was determined by X-ray crystallography [25].…”

Se2NBr3, Se2NCl5, Se2NCl‐6: New Nitride Halides of Selenium(III) and Selenium(IV)

“…[' -The search for alternatives to tetraselenium tetranitride, limited in its synthetic use because of its explosive character and extreme insolubility, is another reason for the generation of new selenium and tellurium nitride halides.',. 51 The trivalent selenium compound Se,NCI, (I), which is readily soluble in organic solvents, '6] We report here two new molecular nitride halides of selenium(n1) and selenium(iv), Se,NBr, (6) and Se,NCI, (7), and the salt PPh~[Se,NCI,]-, derived from 7. Thus, a direct comparison of the molecule 7, the related cation 4 and the anion [Se,NCI,]-(8) is possible.…”