Synthesis and crystal structure of two zinc-containing complexes of triethanolamine

New atranes and similar ionic complexes. Synthesis, structure, properties

“…XRD studies of HMA crystals conducted by J.G. Verkade et al and our data demonstrate that these crystals consist of tricyclic hydrometallatrane cations containing one N → M and three HO → M coordination bonds, as well as X − anions (Figure b).…”

“…Despite the metal complexes of triethanolamine, hydrometallatranes (HMA), are known for a long time, their synthesis and structure keep attracting research interest …”

“…Despite the metal complexes of triethanolamine, hydrometallatranes (HMA), are known for a long SCHEME 4 The alternative synthesis of quasisilatranes 4 SCHEME 5 The reaction of 3-aminopropylsilatrane with acetic and (het)arylchalcogenylacetic acids time, [40,81] their synthesis and structure keep attracting research interest. [82][83][84] It is known that biological activity of similar compounds can be significantly enhanced if essential metals are incorporated in their skeletons. [47,85] In this vein, HMA and their congeners represent very promising compounds (Figure 1b and Figure 2).…”

Thermal decomposition of cerium triethanolamine complexes

“…1) perfectly fits the structure of [La(NO3)(C6H15NO3)2](NO3)2 [21]; a network of [La(NO3)(C6H15NO3)2] 2+ cations and nitrate counter-ions (a similar structure was also reported for Pr as metal [22]). In this structure, TEA acts as a tetradentate ligand [24], a nitrate group is bonded to the Ce atom in bidentate mode, and two nitrate groups, that are not coordinated, compensate the charge of the cation. In addition, EA analysis of the compound Ce−TEA−2 agrees with the expected values for the Ce(III) complex: [Ce(NO3)(C6H15NO3)2](NO3)2 (see Table 1) and those reported in ref.…”

“…Taking advantage of the heat released during precursor decomposition, product formation is achieved at low processing temperature in a very short time lapse. Besides, triethanolamine (TEA) has been successfully used as a chelating agent to obtain stable crystalline 3d-4f-heterometallic complexes [12,[16][17][18][19][20][21][22][23][24][25][26]. TEA-nitrate-metal complexes are of special interest as precursors for combustion synthesis because TEA is a reducing agent while the nitrate group is a strong oxidizing agent.…”