Zintl anions from the extraction of Zintl phases with non-amine solvents: isolation of (Me4N)4Sn9, [K(HMPA)2]4Sn9, and K4SnTe4 and structural characterization of (Bu4N)2Mx (M = Te, x = 5; M = Se, x = 6; M = S, x = 6)

Abstract

Die Darstellung der Polyatomanionen von Hauptgruppenelementen wie Snä", Teä", Seä′, S2" und SnTe4′ ohne Anwendung von Kryptaten oder Aminlösungsmitteln wird beschrieben.

Convenient synthesis, X-ray crystal structure, and Raman spectrum of the heptasulphide dianion, S72−, in [PPN]2S7•2EtOH

“…2EtOH. In contrast, it should be noted that the values of the S-S distances in the all-trans S6'-ion of ethylenediammonium hexasulphide alternate, the shortest being the internal S-S bond (22), whereas no significant difference between internal and terminal S-S bond lengths was found for [BuqNI2S6 (24). The average S-S bond length in observed for the S72-ion in these two salts.…”

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

“…The authors exclude lattice effects to be the reason for the short Se-Li distances; hence this compound should be viewed as a lithiate (b). [48] Only elementary analyses were reported for [NEt 4 ] 2 (Se 6 ) (c), [23] whereas [NMe 4 ] 2 (Se 6 ) (c), [51] and (NBu 4 ) 2 (Se 6 ) (c) [56] could be characterized by means of singlecrystal X-ray diffraction. Isostructural [M(NH 3 ) 6 ](Se 6 ) (M = Mn, Fe) [37] (c) and [Mn(cyen) 3 ](Se 6 ) [27] (c) exhibit pseudolayers and weak hydrogen bonding, with intermolecular Se-Se distances of at least 3.618 Å, which are significantly larger than all intramolecular bonds (terminal: 2.313 Å, intra-chain: [57] with six Mg ions and six bridging ligands in a face-sharing cubic arrangement that stabilize the (Se 6 ) 2-unit, is further known besides [(td)NMe 3 ] 2 (Se 6 ) (c).…”

(4,7,13,16,21,24-Hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane)sodium tetratelluride(2-)

“…In the present salt, the anion has no crystallographic symmetry, the Te--Te distances are 2.702 (3) (Huffman & Haushalter, 1984) but are comparable to the bond lengths observed for the pentatelluride * Note, however, that in BaS4.H20 the S-S bond lengths are 2.079 (3)-2.062 (3) A with the bond alternation more significant in one S 2-anion than in the other (Abrahams & Bernstein, 1969). anion in [Bu4NI2 [Te 51 [2.704(1) x2 (end) and 2.746 (i)A ×2 (middle)] (Teller, Krause & Haushalter, 1983). For comparison, the Te-Te bond lengths in a tritelluride salt in a crypt structure are 2.692 (5) and 2.720 (4)A (Cisar & Corbett, 1977).…”