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Melamine–melem adduct phases: Investigating the thermal condensation of melamine

Sattler, Andreas, Pagano, Sandro, Zeuner, Martin, Zurawski, Alexander, Gunzelmann, Daniel, Senker, Jurgen, Muller-Buschbaum, Klaus and Schnick, Wolfgang 2009, Melamine–melem adduct phases: Investigating the thermal condensation of melamine, Chemistry : a European journal, vol. 15, no. 47, pp. 13161-13170, doi: 10.1002/chem.200901518.

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Title Melamine–melem adduct phases: Investigating the thermal condensation of melamine
Author(s) Sattler, Andreas
Pagano, Sandro
Zeuner, Martin
Zurawski, Alexander
Gunzelmann, Daniel
Senker, Jurgen
Muller-Buschbaum, Klaus
Schnick, Wolfgang
Journal name Chemistry : a European journal
Volume number 15
Issue number 47
Start page 13161
End page 13170
Total pages 10
Publisher Wiley
Place of publication London, Eng.
Publication date 2009-12-07
ISSN 1521-3765
Keyword(s) adduct phases
condensation
melamine
NMR spectroscopy
x-ray diffraction
Summary By studying the thermal condensation of melamine, we have identified three solid molecular adducts consisting of melamine C3N3(NH2)3 and melem C6N7(NH2)3 in differing molar ratios. We solved the crystal structure of 2 C3N3(NH2)3⋅C6N7(NH2)3 (1; C2/c; a=21.526(4), b=12.595(3), c=6.8483(14) Å; β=94.80(3)°; Z=4; V=1850.2(7) Å3), C3N3(NH2)3⋅C6N7(NH2)3 (2; Pcca; a=7.3280(2), b=7.4842(2), c=24.9167(8) Å; Z=4; V=1366.54(7) Å3), and C3N3(NH2)3⋅3 C6N7(NH2)3 (3; C2/c; a=14.370(3), b=25.809(5), c=8.1560(16) Å; β=94.62(3)°; Z=4; V=3015.0(10) Å3) by using single-crystal XRD. All syntheses were carried out in sealed glass ampoules starting from melamine. By variation of the reaction conditions in terms of temperature, pressure, and the presence of ammonia-binding metals (europium) we gained a detailed insight into the occurrence of the three adduct phases during the thermal condensation process of melamine leading to melem. A rational bulk synthesis allowed us to realize adduct phases as well as phase separation into melamine and melem under equilibrium conditions. A solid-state NMR spectroscopic investigation of adduct 1 was conducted.
Language eng
DOI 10.1002/chem.200901518
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2009, Wiley
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30064412

Document type: Journal Article
Collections: Faculty of Health
Population Health
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