The title compound (C6H5)2(OC4H8N)P=N-S 3N3 crystallizes in the space group P1̄ with unit cell parameters a = 9.3900(2), b = 9.4747(1), c = 11.3850(3) Å, α = 95.73(4), β = 96.85(6), γ = 104.26(2)°, and Z = 2. The tricoordinated sulfur of the cyclotrithiazene ring deviates from the mean plane of other skeletal atoms by 0.683(4) Å. The angle at this atom is the smallest in the ring and is enclosed by the longest S-N bonds observed in the ring.

Janaswamy Srinivas

G. Sreenivasa Murthy

Colacot J. Thomas

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IIT Madras

Crystal structure of (diphenyl)(morpholino)phosphiniminocyclotrithiazene

Journal of Chemical Crystallography

Iodination reactions of various phosphiniminocyclotrithiazenes [R 3PNS3N3; R = (i) phenyl-, (ii) morpholino-, and (iii) p-chlorophenyl-] have been studied under different experimental conditions. Iodination of Ph3PNS3N3 yields interesting products such as [(Ph3PN)2S3N 3]I3, ((Ph3PN)3S)2I 4, (Ph3PNH2)I3, ((Ph 3PSI2)2I2, and [(Ph 3PN)3SO]2I6 depending on the experimental conditions. All the products have been isolated and characterized by the spectroscopic and analytical techniques. Copyright © Taylor &amp; Francis Group, LLC.

Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry

Studies on iodination reactions of phosphiniminocyclotrithiazenes

The title compound (NC4H8NCH3)(C 6H5)[N(C6H11)2]P=N-S 3N3 crystallizes in the triclinic crystal system with unit cell dimensions: a = 9.7572(2), b = 10.6845(1), c = 16.9381(3) Å, α = 71.75(1)°, β = 80.65(2)°, γ = 65.93(1)°, and Z = 2. The tricoordinated sulfur atom (S1) in the cyclotrithiazene deviates from the mean plane of the other five atoms by 0.716(6) Å, which is the highest among the known phosphiniminocyclotrithiazene structures. In the exocyclic P=N4-S1 moiety, the two bond distances are short: 1.585(6) and 1.527(6) Å; but the bond angle is large 135.3(4)°. The S1 displacement is highly correlated with the endocyclic angle at the nitrogen atom (diagonally opposite to S1), but the nature of correlation is bimodal (R = 1.0 + or -1.0) for the cyclic and acyclic substituents (R) in the (R)(C6H 5)[N(C6H11)2]P=N-S3N 3 series. On the other hand, the S1-N4 bond distances are negatively correlated (R = -0.94) with the P=N4-S1 bond angle in the above series. © 2005 Springer Science+Business Media, Inc.

Crystal structure analysis of (N-methyl piperazino) (phenyl) (dicyclohexylamino) phosphiniminocyclotrithiazene

The title compound (C6H12N)Ph2P=N-S 3N3·C7H8 crystallizes in the monoclinic space group P21/n with unit cell dimensions: a = 9.9200(5), b = 16.3316(11), c = 15.7009(17) Å, β= 91.99(1)°, and Z = 4. The cyclotrithiazene ring adopts a chair conformation with equal bond distances and the norbornadiene is fused in an exo, exo fashion to the heterocycle. Norbornadiene addition to the cyclotrithiazene influences the bonding pattern in the ring as well as the P-N-S moiety.

Crystal structure analysis of norbornadiene adduct of diphenyl hexamethylenimino phosphiniminocyclotrithiazene

The title compound (C6H5)(C4H8NO)[N(C6H 11)2]P=N-S3N3 crystallizes in a triclinic crystal system with unit cell parameters a = 9.8884(4) Å, b = 10.6075(1) Å, c = 14.2276(2) Å, α = 78.14(3)°, β = 79.31(1)°, γ = 65.42(2)°, V = 1319.44(6) Å3, Z = 2, and space group P1̄. The cyclotrithiazene ring adopts a "distorted chair" conformation with a deviation of 0.682(7) Å for the tricoordinated sulfur atom. Remarkably, a short exocyclic S-N bond length 1.489(4) Å along with a large P-N-S angle 136.2(3)° are observed with the iminophosphorus moiety. © 2003 MAIK "Nauka/Interperiodica".

Crystallography Reports

Crystal structure analysis of (morpholino)(phenyl)(dicyclohexylamino) phosphiniminocyclotrithiazene

Electrochemical (polarographic, cyclic voltammetric, and coulometric) and coordination behaviour of several symmetrically and unsymmetrically substituted phosphiniminocyclotrithiazenes have been studied. Polarograms of R3PN-S3N3 R = C6H5, p-ClC6H4, p-H3CC6H4, and (OC4H8N)), Ph2OC4H8N)PN-S3N3, and Ph(OC4H8N)2PN-S3N3 give two cathodic waves. Cyclic voltammograms of Ph3PN-S3N3 (1) and (OC4H8N)3PN-S3N3 (2) reveal nearly the same oxidation peak potential but different reduction potentials. Controlled potential electrolysis of 1 and 2 at +0.6 V indicates exocyclic cleavage and ring degradation. Cathodic reduction behaviour of Ph3PN-S3N3 suggests the possibility for the) formation of 1,5-(Ph)3(PN)2S4N4 under electrochemical conditions. Reaction of nickel chloride hexahydrate with heterocycle 1 in 1:2 molar ratio in acetonitrile affords the complex, ([NiS2N2H2] (A) (90% yield) and [Ph3PNH2]Cl salt as products. Analogous reactions with other ligands of this type (two symmetrical (sym.) and three unsymmetrical (unsym.)) except 2 also give A, while ligand 2 reacts with anhyd NiCl2 in an equimolar ratio to afford a dark green, square-planar complex ((OC4H8N)3(PN-S3(N·NiCl 2 (B)) whose ESCA results assist in providing its coordination details. The study reveals a high tendency of these heterocycles to different types of ring cleavage.

Canadian Journal of Chemistry

Studies on electrochemical and coordination behaviour of phosphiniminocyclotrithiazenes

The reactions of the tertiary (amino)phosphines (R2N)3P [R2N = C4H8N-, C5H10N-, C6H12N-, OC4H8N-, and CH3NC4H8N-·] with S4N4 are described. The phosphiniminocyclotrithiazenes (R2N)3PN-S3N3 (1-5) are the only heterocyclic products isolated (60-80% yield). Excess (amino)phosphines cleave the heterocycles readily while norbornadiene reacts with them to give rise to the addition products, (R2N)3PN-S3N3·C7H8 (6-9) in small yields. The single crystal X-ray structure of (C5H10N)3PN-S3N3 (triclinic system, space group P1̄) gave the unit cell dimensions: a = 9.573(5), b = 10.372(6), c = 10.916(6) Å, α = 85.46(3), β = 81.13(4), γ = 79.73(4)°, V = 1052.25 Å3 and Z = 2. The structure has been compared with that of Ph3PN-S3N3 which is the only other compound of this type (R3PN-S3N3) whose X-ray structure is known. © 1990.

Polyhedron

Cyclic SN compounds and phosphorus reagents-VII. Reactions of S4N4 with tertiary (amino)phosphines: Synthesis and characterization of (R2N)3PN-S3N3 derivatives and their addition products with norbornadiene. X-ray crystal structure of (C5H10N)3PN-S3N3

Remedial investigation report on Waste Area Grouping 5 at Oak Ridge National Laboratory, Oak Ridge, Tennessee. Volume 1: Technical summary

Bulletin of the Chemical Society of Japan

Synthesis and X-Ray Crystal Structure of 1-[Diphenyl(2-pyridyl)phosphoranylideneamino]-1H-1,3,5,2,4,6-trithia (5-SIV)triazine

Chemische Berichte

Anorganische Ringsysteme mit Ferrocenyl-Substituenten

Journal of the Chemical Society, Chemical Communications

The oxidation of the trisulphur trinitride anion S3N3 ? by molecular oxygen; preparation and the crystal and molecular structure of [(Ph3P)2N]+[S3N3O]?

Journal	Journal of Chemical Crystallography
Publisher	Kluwer Academic/Plenum Publishers
ISSN	10741542
Open Access	No