Synthesis and structure of diorganyldiaryloxytelluranes with intramolecular Te ⋯ N coordination bonds

Synthesis and structure of N-arylimines of β-tellurocyclohexenals with the intramolecular coordination N→Te bonds

“…Similar concentration effects interpreted as a result of dissociation of the intramolecular coordination N ! Te bonds were previously observed in the cases of the trichlomercurate 20 [45] derived from 8 and Te, Te-dimethyl-bis[2-(R 2 -benzylideneimino)-R 1 -phenyloxy]telluranes 21 [43]. The origin of the effect is not fully understood.…”

“…All newly synthesized compounds were characterized by 125 Te and 1 H NMR spectroscopy, the former being known for extreme sensitivity to the geometry and the electronic environment of tellurium [1,9,13,[41][42][43][44]. The d 125 Te and d 1 H chemical shift data are listed in Table 10.…”

Bis(2,6-dimethoxyphenyl)tellurium dihalides (Cl, Br or I) and dithiocyanate: crystal structure and temperature-dependent NMR spectra

“…Great interest has been paid to the effect of orthosubstituents in diaryltellurium dihalides. [21][22][23][24][25] The X-ray crystallographic analyses of ArPhTeX 2 (Ar = 2-Me 2 NCH 2 C 6 H 4 ; X = Br or I) were indicative of an ionic structure, [ArPhTeX]X, with the 2-Me 2 NCH 2 nitrogen atom co-ordinated to the tellurium atom forming a five-membered ring. 21, 26 The crystal structure of 4-ethoxyphenyl(2-benzylideneamino-5-methylphenyl)tellurium dichloride showed that the geometry around tellurium could be considered as essentially pseudo-octahedral with lone pair electrons occupying the fourth equatorial site.…”

Molecular structure, vibrational spectroscopic and HOMO/LUMO studies of some organotellurium compounds by quantum chemical investigations

“…Tellurium chemistry has been the subject of intensive research in the last three decades due to the interest of several research groups in organometallic and supramolecular chemistry of organotellurium compounds [1,2]. There is increasing interest in the synthesis of aromatic organotellurium compounds containing electron donor nitrogen atom at position ortho to the tellurium atom [3,4], such as azo group [5] and azomethine group [6,7]. These compounds have high stability due to intra-molecular interaction between tellurium and nitrogen atoms [8,9].…”