Über Alkalimetallverbindungen der Imide des Schwefels

Abstract

Von den beiden bekannten Imiden des Schwefels S7NH und S4(NH)4 ausgehend konnten durch Umsetzen mit Triphenylmethylnatrium die festen Natriumsalze Na[NS7] und Na4[NS]4 gewonnen werden. Diese Verbindungen erwiesen sich als instabiler und reaktionsfähiger als die Imide selbst. Aus dem durch Umsetzen von S4N4 mit NH3 gewinnbaren Imid‐amid HNSNSNH2 konnte das braune Na[NSNSNH2] und das hellgelbe Na3[NSNSN] gewonnen werden. Besonders die letztere Verbindung erwies sich als äußerst berührungsempfindlich und explosiv.

Sulphur–nitrogen anions: 14N and 15N NMR investigations of the deprotonation of cyclic sulphur imides and sulphur–ammonia solutions

“…This finding explains the previously reported observation that the deprotonation of S,(NH), by potassium hydride in THF produces K+S3N3-as the final product (49). It is also noted that the explosive product of the reaction of S,(NH), with Ph3CNa (1 : 2 molar ratio) was tentatively identified as Na2N4S4H2 on the basis of analytical data (36). It seems likely that this product is Na[S2N2H], but the use of large cations, e.g., P~, A S + or (P~,P),N+, will likely be necessary to isolate stable crystalline salts (1).…”

Structure and dynamics in metal tetrahydroborates. I. Nuclear magnetic resonance studies of zirconium and hafnium tetrahydroborates

“…The binding energy of H3BN(CH3)3, relative to that of BF3, is taken to be the energy of reaction 5. Al-H3BN(CH3)3 + CF3+ -BFs + N(CH3)4+ (5) though the heat of the formation of the gaseous tetramethylammonium ion apparently has not been recorded, it can be estimated from a Born-Haber cycle for tetramethylammonium nitrate. The sum of reactions 6, 7, and 8 is reaction 9, for which AH0 is the ¿02(g) + N,(g) + 4C(s) + 6H2(g) -[(CH3)4N]N03(s) (6) [(CH3)4N]N03(s) -N(CH3)4+(g) + NOa-(g) (7) NOs"(g) -> ¿N2(g) + ¿02(g) + er(g) (8) ¿N"(g) + 4C(s) + 6H2(g) ->-N(CH3)4+(g) + e~(g) (9) heat of formation of the gaseous tetramethylammonium ion.…”

Bases

“…However, compounds of NH 2~ exist, either sparingly soluble or fairly stable complexes. The following are known: SNH, 269 PbNH, 51 SnNH, 50 GeNH, 90 Ge(NH) 2 , Si(NH) 2 , Zr(NH) 2 , B 2 (NH) 3 . 9 0 ' 1 0 7 ' 2 3 9 These reactions are observed: 51 273 with osmium, 277 and with iridium.…”

“…269 ] 5S + 3NH 3 -> 2SN + 3S 2 " + 6 N I C [compounds S 4 N 4 and HN = S = N-S-NH 2 have been described. 23 ' 269 ] The alkali metals reduce sulphur to form sulphide; 121,168 potentiometric titrations using a platinum indicator electrode 168 have shown the successive formation during addition of Na, K, Rb or Cs, of intermediate poly sulphides.…”