Pyrolysis of Some Polyethylene Amines

An Antimony Sulfide with Copper Pillars: [C4H12N2]0.5[CuSb6S10]

“…This suggests that the reaction conditions have resulted in cyclization of the TETN, leading to in situ formation of the effective templating agent piperazine. Decomposition of TETN to ethylenediamine and cyclized species has been reported to occur under conditions similar to those employed in synthesis here. Parise and Ko have observed similar cyclization of TETN at long reaction times during the synthesis of [C 4 H 8 N 2 ][Sb 4 S 7 ] .…”

Synthesis, X-ray diffraction and Hirshfeld surface analysis of two new hybrid dihydrate compounds: (C6H22N4)[SnCl6]Cl2·2H2O and (C8H24N4)[SnCl6]Cl2·2H2O

“…By controlling the temperature, two new organic-inorganic hybrid compounds, triethylenetetraammonium hexachloridostannate(IV) dichloride dihydrate, (C 6 Commercial triethylenetetramine is a mixture of linear TETA (typically 60%) and other branched or cyclic TETA, with close boiling points, such as tris-(2-aminoethyl)amine), 1,4-bis(2-aminoethyl)piperazine, (Bis AEP), and N-[(2aminoethyl)2-aminoethyl]piperazine). Piperazine derivatives are relatively more volatile than the corresponding linear polyethylene amines (Hutchinson et al, 1945).…”

Macrocyclic Amines as Structure-Directing Agents for the Synthesis of Three-Dimensional Antimony-Sulfide Frameworks

“…The principal types of organic species used are linear and branched long-chain aliphatic amines and polyamines and alicyclic amines. Long-chain polyamines, in particular, are frequently unstable at elevated temperatures . For example, under solvothermal conditions they can undergo side-reactions such as cyclization 3,15 and cleavage, thereby introducing further geometric diversity into the structure-directing agent.…”

“…Long-chain polyamines, in particular, are frequently unstable at elevated temperatures. 14 For example, under solvothermal conditions they can undergo sidereactions such as cyclization 3,15 and cleavage, 16 thereby introducing further geometric diversity into the structuredirecting agent. The products of such reactions consist of complex anionic metal-sulfide frameworks with protonated amines fulfilling the charge-balancing role.…”