The reaction of some substituted ortho-benzoquinones with elemental tellurium and with tellurium(II) compounds

A Sterically Hindered Derivative of 2,1,3‐Benzotelluradiazole: A Way to the First Structurally Characterised Monomeric Tellurium–Nitrogen Radical Anion

“…2.012 ;T e(3,5-tBuC 6 H 4 O 2 ) 2 •bipy, 2.012 ). [24,25] In addition, all butt he last-mentioned alkoxides and catecholates have ad isphenoidal geometry around the Te IV atom, as is expected from the theory of repulsion of the valence-shell electron pairs. [26] This, however,i si no utright contrast to the almost planar coordination core of 1,and thus suggests Te II .B oth arguments give strong evidence that the formulation 1b (with divalent tellurium) should be assigned to 1.…”

“…For 2•1.25 THF,t he corresponding void volume was ca. 2760 3 with electron count of 360, which was assigned to ten THF molecules per unit cell and 1 25. molecules per formula unit.…”

Lewis Base Sequestered Chalcogen Dihalides: Synthetic Sources of ChX2 (Ch=Se, Te; X=Cl, Br)

“…[26,27] Indeed, the Se-bipy complexes are the first structurally characterized bipy chelates of that element, and a derivative of 6 represents only the second example of a Te-bipy molecule characterized by X-ray diffraction studies. [28]…”

Bis(ethyleneglycolato-κ2O,O′)tellurium(IV)

“…Crystal structures of seven similar four coordinate Te 4+ complexes with oxo ligands have previously been reported by Day & Holmes (1981), Yosef et al (2007), Annan et al (1992), Fleischer & Schollmeyer (2001), Betz et al (2008) and Lindqvist (1967), all of which have a distorted seesaw geometry of the Te centre. The geometries or the Te-O bond lengths in these structures do not differ remarkably from those in the title compound.…”

“…For the use of Te 4+ ethylene glycol solutions in electrodeposition of Te and Te compounds, see: Nguyen et al (2012); Wu et al (2013). For crystal structures of related four-coordinate Te 4+ complexes with oxo ligands, see: Day & Holmes (1981); Yosef et al (2007); Annan et al (1992); Fleischer & Schollmeyer (2001); Betz et al (2008); Lindqvist (1967). Table 1 Selected bond lengths (Å ).…”