Melem- and melamine-derived iminophosphoranes

Saplinova, Tatyana; Lehnert, Christian; Böhme, Uwe; Wagler, Jörg; Kroke, Edwin

doi:10.1039/b9nj00621d

Cited by 28 publications

(22 citation statements)

References 81 publications

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“…[12] Exchanging one carbon ring atom in s-triazine-based compounds by phosphorus may lead to precursor molecules with a defined atomic ratio C/N/P = 2:3:1 (i.e., endocyclic doping). A different approach to obtain well-defined phosphorus carbon nitride compounds is the use of suitable precursors containing preorganized C-N-P motifs.…”

Section: Introductionmentioning

confidence: 99%

A Systematic Approach to Alkali Biuretooxophosphates

Wirnhier

Schnick

2012

Eur J Inorg Chem

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Biuretooxophosphates represent a link between carbon nitride and phosphorus (oxo)nitride precursor chemistry being closely related to cyanurates and trimetaphosphimates. The group of alkali biuretooxophosphates has been complemented by the synthesis of four salts M[PO 2 (NH) 3 (CO) 2 ]· xH 2 O in which M = Li, K, Rb, and Cs (x = 1, 0, 0.5, 0, respectively). The structures were solved by single-crystal X-ray diffraction and compared with the corresponding ammonium and sodium salts. For all of the salts, the 1-phospha-2,4,6-striazine ring exhibits a nearly planar conformation with the [a]

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Section: Introductionmentioning

confidence: 99%

A Systematic Approach to Alkali Biuretooxophosphates

Wirnhier

Schnick

2012

Eur J Inorg Chem

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“…The bond lengths and angles in the C 3 N 3 core are in the expected range for all three structures. The bond lengths from the triazine carbon to the sulfur atom are 1.75 Å (mean value) in 1 .…”

Section: Resultsmentioning

confidence: 99%

Sulfides and Disulfides of s‐Triazine: Potential Thermal Thiyl Radical Generators

Höhne

Posern

Böhme

et al. 2018

Chemistry A European J

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A series of aliphatic and aromatic thioethers and dithioethers of s-triazine were synthesised to study their thermal properties, in particular the thermally induced thiyl radical generation ability. Four symmetric s-triazine sulfides of the type (RS) C N , namely 2,4,6-tris(phenylthio)- (1), 2,4,6-tris(para-tolylthio)- (3), 2,4,6-tris(ethylthio)- (5) and 2,4,6-tris(tert-butylthio)-1,3,5-triazine (7), as well as four symmetric s-triazine disulfides of the type (RSS) C N , namely 2,4,6-tris(phenyldithio)- (2), 2,4,6-tris(para-tolyldithio)- (4), 2,4,6-tris(ethyldithio)- (6) and 2,4,6-tris(tert-butyldithio)-1,3,5-triazine (8) were synthesised. All compounds were comprehensively characterised by H and C NMR, infrared and Raman spectroscopy as well as elemental analyses. Single-crystal X-ray diffraction analyses of 1, 2 and 5 are discussed. The thermal behaviour was studied by thermogravimetric analyses coupled with mass spectrometry (TGA-MS) and quantum chemical calculations. Limiting oxygen index (LOI) flammability tests showed that the disulfides are the most promising radical generators, and are most likely suitable flame retardants for selected polymers.

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“…The bond lengths and angles are in accordance with those reported for other melonates and heptazine compounds, and the inner C-N bonds (C2-N7, C4-N7, C6-N7) are significantly longer than the outer ones. [6,7,11,13,16,18,19,22,[26][27][28][29] Figure 1. Asymmetric unit of 2c with numbering scheme.…”

Section: Crystal Structure Of 2cmentioning

confidence: 98%

“…[5] Moreover, molecular heptazine derivatives have flame-retardant properties. [6,7] Among the few s-heptazine derivatives comprehensively characterised to date are melon, [8] cyameluric acid, [9,10] some cyameluric acid salts, [11,12] esters [13] and related polymers, [14] which are based on the [C 6 N 7 O 3 ] motif. Further sheptazines have been derived from melem [15] and cyameluric chloride.…”

Section: Introductionmentioning

confidence: 99%