Syntheses and solid-state NMR of tetrabutylammonium hydrogen telluride, tetramethylammonium hydrogen selenide and bis(tetramethylammonium) ditelluride and x-ray crystal structures of Me4NSeH and (Me4N)2Te2

Synthesis, structure and properties of a novel metal tellurobromide – Hg2TeBr3

“…1). The Te1-Te1 covalent bond length is of 2.798(4) Å , which is comparable with that reported [16]. The [Te1-Te1] 2À dianion acts as a l 4 -bridge (Scheme 1), as the cases found in Cs 3 Cu 8 Te 10 [17] and [NBu 4 ] 4 [Hg 4 Te 12 ] [18].…”

Solid State Polyselenides and Polytellurides: A Large Variety of Se–Se and Te–Te Interactions

“…These dumbbells are also found in organic compounds with similar bond lengths, e.g. in [N(CH 3 ) 4 ] 2 Te 2 ( d Te–Te = 2.74 Å) [27] and [Na(CH 3 OH) 3 ] 2 Te 2 [28]. Assigning charges is straightforward in these examples, e.g.…”

Organic Cation and Complex Cation‐Stabilized (Poly‐)Selenides, [Cation]x(Sey)z: Diversity in Structures and Properties

“…[(Me 2 NH 2 P) 2 N] 2 Se (c) was obtained from decomposition reactions of selenophosphazane heterocycles,26 [Mn( cyen ) 3 ] 2 [H 2 cyen ](Se 2 Te) 2 Se (c) ( cyen = trans ‐cyclohexane‐1, 2‐diamine),27 [Ph 2 P(NH 2 ) 2 ] 2 Se (c),28 the H 2 O/MeOH solvated double salt of K 10 [Zn 4 Sn 4 Se 13 Te 4 ] · 4K 2 Se (c) with the Se 2– anions aggregating to a dodecahedral substructure,29 (NMe 4 )(HSe) (c),30 and Na 2 Se · x H 2 O with x = 531 or 932 (c) are reported in the literature. Our own contributions include the formation and characterization of [Li 2 (H 2 O) 7 ]Se ( 1 ) (c), [K(H 2 O) 4 ] 2 Se ( 2 ) (c), [K 4 (H 2 O) 10 ](Se 2 )Se ( 3 ) (c), and [Ba(H 2 O) x ] 3 [Ba(OH) 2 (H 2 O) x –2 ]Se 3 ( 4 ) ( x ≈ 13) (c).…”

“…Björgvinsson and Schrobilgen started a compilation of various homo‐ and hetero‐(poly)chalcogenides in en and/or liquid NH 3 21 and on the (HSe) – anion in the solid state,30 which were complemented by Cusick and Dance in other solvents 75. Both groups could not observe an (Se 2 ) 2– in solution, which seems to disproportionate.…”