Tetrasulfur Tetranitride, S<sub>4</sub>N<sub>4</sub>

Villena-Blanco, Milagros; Jolly, William L.; Egan, B.Z.; Zingaro, Ralph A.

doi:10.1002/9780470132401.ch26

Cited by 90 publications

(10 citation statements)

References 4 publications

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“…Solvents were dried, purified and stored according to common procedures. [26] [27] [S 4 N 3 ]Cl, [28] Cp*Co(CO) 2 , [29] [Cp*RhCl 2 ] 2 , [30] [Cp*IrCl 2 ] 2 , [30] [nBu 2 Sn(S 2 N 2 )] 2 [6] and 2 [4] were prepared according to published methods. Compound 6 was prepared by the published procedure but the reactants were mixed in their CH 2 Cl 2 solutions.…”

Section: Methodsmentioning

confidence: 99%

“…Residues of S 4 N 4 were disposed of by decomposition with aqueous NaOH. [31] The crude S 4 N 4 /S 8 mixture obtained from the dioxane extract [27] contained a high amount of sulfur. A significant amount of sulfur was removed by suspending the S 4 N 4 /S 8 mixture in a sufficiently small amount of dichloromethane and subsequent decanting of the orange S 4 N 4 -rich solution.…”

Section: Purification Of S 4 Nmentioning

confidence: 99%

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Molecular and Crystal Structures of Cp*M(S₂N₂) (M = Co, Rh, Ir) and Related Compounds

et al. 2009

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Cp*Rh(S2N2) was prepared as a microcrystalline solid by using [S4N3]Cl in liquid ammonia or [nBu2Sn(S2N2)]2. It was characterised by NMR, IR and Raman spectroscopy andmass spectrometry. Low‐temperature crystal structures of Cp*Co(S2N2) and Cp*Ir(S2N2) were determined. The experimental characterisation of the Cp*M(S2N2) complexes was complemented by calculated geometries and bond orders at the DFT/B1B95 level of theory. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)

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Section: Methodsmentioning

confidence: 99%

Section: Purification Of S 4 Nmentioning

confidence: 99%

Molecular and Crystal Structures of Cp*M(S₂N₂) (M = Co, Rh, Ir) and Related Compounds

et al. 2009

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“…For synthesizing different types of inorganic heterocycles, the starting material that has assumed importance is cyclotetrathiazene or tetrasulfur tetranitride, S 4 N 4 ( Caution! S 4 N 4 may cause explosion; safety precautions have to be employed during handling; 222 safe laboratory procedures are available for synthesis 223), which itself is a π‐electron‐rich inorganic heterocycle (contains 12 π‐electrons and therefore is bright orange in colour).…”

Section: Aminophosphinesmentioning

confidence: 99%

Aminophosphines: their chemistry and role as ligands and synthons

Gopalakrishnan

2009

Applied Organom Chemis

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In recent years, research in organophosphorus chemistry has mainly focused in designing newer and better phosphorus ligands for synthesizing novel metal complexes with improved catalytic activities. Aminophosphines [tricoordinate phosphorus(III)-nitrogen systems] are considered as versatile compounds owing to the presence of nitrogen centres which, in principle, can influence additional reactivity features. They are quite sensitive to air and moisture due to the presence of polar P-N bond(s). In spite of this, research in aminophosphine chemistry is gaining momentum day-by-day and this is due mainly to one reason: their rich behaviour as ligands in metal complex chemistry and subsequently in catalysis. Their role as synthons in inorganic heterocyclic chemistry has also helped produce new types of heterocycles. In this paper, the chemistry of simple acyclic aminophosphines (synthesis, characterization, reactivity and applications) is covered and particular focus is given to their ability to form chalcogenides along with their role played as ligands in coordination chemistry and as synthons in inorganic heterocyclic chemistry.

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“…Tetrasulfur tetranitride (S4N4, l), the best known binary compound of sulfur and nitrogen, was first isolated in 1835 from the reaction of sulfur monochloride and ammonia (23). The standard method for preparing S4N, used today is still based on this reaction (24), but several alternative methods, used primarily for isotope incorporation. have recently been developed.…”

Section: Neutrul (Bmpoundsmentioning

confidence: 99%

“…As with SIN,, its treatment with nucleophiles leads to both ring contracted and openchain derivatives (286, 287). When azide is used, the S3N30; species 24 is produced (see Section IV.B.1 for a discussion of the mechanism of this reaction) (131, 286b). Oxidation of SIN,O: with S02C1?…”

mentioning

confidence: 99%

Cyclic and Heterocyclic Thiazenes

Oakley

1988

Progress in Inorganic Chemistry

127

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Scheme I1A second binary compound, tetrasulfur dinitride (S4N2, 4), was also isolated before the end of the last century (32). Its correct elemental composition, however, was not established until 1925 (33), and its molecular formula not confirmed until 1951 (34). Early estimates suggested the formula N2Sj (32), an observation that attests to the tendency of the molecule to disproportionate above its melting point of 22.5"C (hence, the high sulfur content). The six-membered ring structure with a half-chair conformation was finally confirmed in 1981 (35,36). Most early preparative methods involved a thermal decomposition, for example, of S4N, in the presence of sulfur and/or carbon disulfide (37,38). More recently the use of simple metathetical reactions, for example, between Ni(S2N2H)? and S2CI2 has been explored (39). A simple procedure involving the reaction of aqueous ammonia with sulfur monochloride has also been developed (40); although the yield is low (<2%), the method provides a convenient preparation of small quantities (<0.5 g) starting from commercially available materials (3%). The solid state polymerization of S4N2 to (SN), ( 5 ) has recently been reported (36); this process is presumably initiated by trace amounts of (radical) impurities since, when recrystallized from diethyl ether, solid S,N, is indefinitely stable below its melting point (3%).Disulfur dinitride (6) (Scheme 11) was first generated (inadvertently) by Burt in 1910 (41) during an attempt to remove sulfur impurities from SJNJ by passing a vaporous mixture of the two over finely divided silver. At the time he noted the formation of a blue film [later characterized as (SN), polymer]. This reaction has been studied extensively since then, and now 304 RICHARD T. OAKLEY

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Tetrasulfur Tetranitride, S₄N₄

Cited by 90 publications

References 4 publications

Molecular and Crystal Structures of Cp*M(S₂N₂) (M = Co, Rh, Ir) and Related Compounds

Molecular and Crystal Structures of Cp*M(S₂N₂) (M = Co, Rh, Ir) and Related Compounds

Aminophosphines: their chemistry and role as ligands and synthons

Cyclic and Heterocyclic Thiazenes

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Tetrasulfur Tetranitride, S4N4

Cited by 90 publications

References 4 publications

Molecular and Crystal Structures of Cp*M(S2N2) (M = Co, Rh, Ir) and Related Compounds

Molecular and Crystal Structures of Cp*M(S2N2) (M = Co, Rh, Ir) and Related Compounds

Aminophosphines: their chemistry and role as ligands and synthons

Cyclic and Heterocyclic Thiazenes

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Product

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Tetrasulfur Tetranitride, S₄N₄

Molecular and Crystal Structures of Cp*M(S₂N₂) (M = Co, Rh, Ir) and Related Compounds

Molecular and Crystal Structures of Cp*M(S₂N₂) (M = Co, Rh, Ir) and Related Compounds