Protonenfreie ionisierende anorganische Lösungsmittel

Abstract

Zihlreiche anorganische Verbindungen werden neuerdings als ionisierende Losungsmittel verwendet. Die in ihnen gelosten Elektrolyte werden entsprechend ihrem Verhalten als Solvosauren, Solvobasen und Solvosalze bezeichnet. Zwischen ihnen eintretende lonenreaktionen stellen Solvoneutralisationen bzw. solvolytische Umsetzungen dar. Damit vermitteln diese Solvosysteme neue Erkenntnisse uber die Wechselwirkungen zwischen Losungsmittel und geloster Substanz und tragen zur Klarung des Saure-Basen-Begriffes bei. Gegenuber dem Wasser ergeben ihre besonderen Eigenschaften neue Wege und grundsatzliche Vorteile fur die praparative anorganische Chemie. Anyew. Chenz. / 64. Jahry. 1952 Nr. 4 Solvens 44 (-100) 61,7 (ZOO) 69,2 ( g o ) 68,5 (ZOO) 72,5 (200) 68,5 (183O) 48.2 (go) 63,5 (20O) 52,3 (29O) 55,O (42O) ' 48,8 (ZOO) 84,O (ZOO) 74,4 (320O) SO 2

Crown Ether Complexes of Alkali‐Metal Chlorides from SO2

“…However,i nc ontrastt oc ompound 2 there are no additional contacts to the chloride ion. Thus, as quare-planar-likec oordination sphere is formed in which atoms Cl1A and Cl1B reside 0.28(1) and 0.17 (1) above and below the virtualp lane spanned by atoms S1 to S4. To the best of our knowledge,t here are no previousr eports on such chlorideion coordination to sulfur atoms in the solid state.…”

“…Prior to measurement, the NMR tube was kept at ambient temperature for at least 2duntil dissolution of the precipitate was complete. 1 The sample preparation of compounds 2-8 was similar to that of 1.…”

Chalcogen Bonding of SO2 and s‐Block Metal Iodides Near Room Temperature: A Remarkable Structural Diversity

“…The coordination pattern of Iand SO 2 is a one-dimensional infinite network along the crystallographic [b] axis (Figure 1: left). The S-I atom distances measure 343.5 (1) [22] Under consideration of the hydrogen bonding between these strands, a two-dimensional coordination polymer is obtained.…”

“…As a non-aqueous polar aprotic solvent, [1] sulfur dioxide has attracted much attention in chemical synthesis over the past years. As also reviewed by Mews, especially the synthesis of salts with WCAs (WCA = weakly coordinating anion) such as [AlCl 4 ] -, [AsF 6 ] -, and [SbF 6 ]is widely spread in literature.…”

“…Different types of such adducts were characterized and discussed in literature: whereas the fluorosulfite anion could also be characterized as a simple salt of MSO 2 F-type (M = K + , Rb + , Cs + ), [18][19][20] the higher homologous halosulfites were only obtained using (large) organocations which make the obtained compounds stable enough for single crystal structure determinations. [11,[20][21][22][23][24][25][26][27] As sulfur dioxide is a gas above temperatures of -10°C, [1] sulfur dioxide solvates are quite unstable at ambient temperature and SO 2 loss makes a satisfactorily characterization of its coordination compounds challenging. Employing cold temperatures are mandatory and especially preparation of single crystals which combine both, moisture and temperature sensitivity is not trivial.…”