Sr[C2(COO)2]: The First Anhydrous Salt of Acetylenedicarboxylic Acid

Mechanochemical Synthesis of New Coordination Polymers with Acetylenedicarboxylate as Bridging Ligand

“…141) as possible space group. At this point it was already speculated that CaADC is isotypic to SrADC (I4 1 /amd, a ≈ 721 pm, c ≈ 1034 pm) [4]. A comparison of the diffraction data of 1 with those of SrADC confirmed this assumption.…”

“…< Table 2 > As already mentioned, CaADC (1) crystallizes in the SrADC type structure [4]. The carbon backbone of the ADC 2-dianion is aligned along the c axis of the tetragonal unit cell with the two carboxylate groups being perpendicular to each other (point group 4 2m).…”

“…150°C cannot be interpreted. The low thermal stability of CaADC compared to isotypic SrADC, which decomposes above 700 K [4], is surprising, but no reasonable explanation can be given at the moment. The DTA/TG curve obtained for Mg(ADC)(H 2 O) 2 (2) is shown in Figure 7.…”

“…But also non-porous coordination polymers promise interesting properties [3]. In the last years we have mainly concentrated our work in this field on the synthesis of coordination polymers containing acetylenedicarboxylate (ADC 2-) as bridging ligand [4][5][6][7][8][9][10][11][12][13][14][15].…”

“…Anhydrous [4][5][6] as well as water containing compounds [7][8][9][10][11][12] were synthesized. Recently, we were able to incorporate additional ligands like NO 3 - [13] or N donor ligands [14,15] in these coordination polymers.…”