Synthesis, structure and dielectric constant properties of a novel 1D coordination polymer[K(2-PTA)(H2O)]n

1,4-Dimethylpiperazine-1,4-diium bis(hexafluorophosphate) dihydrate

“…For background to molecular ferroelectrics, see: Fu et al (2009); Ye et al (2006). Table 1 Hydrogen-bond geometry (Å , ).…”

“…Dielectric constant measurements of compounds as a function of temperature is the basic methods to find the materials which possess potential ferroelectric phase changes (Fu et al,2009;Ye et al,2006).The dielectric constant of the title compound has been measured, but showed no dielectric disuniformity in the range 120-385 K (mp. 393-402 K)…”

Synthesis, structure and properties of one novel 2D Mn-heterocyclic carboxylic acid complex [Mn(TPA)Cl(H2O)]n

“…The bands at 1547, 1430 cm À1 are attributed to the tetrazole group [35]. To compare with the IR spectrum of raw material TPC, the absence of a strong peak at 2280 cm À1 for 1 indicates that the cyano group has been completely hydrolyzed.…”

“…doi:10.1016/j.molstruc.2011.02.0542.2. Preparation of the ligands TPC and TPAThe ligands, TPC and TPA, were prepared according to the literature methods[35] from picolinonitrile through two steps (Scheme 1).…”

Coordination Architectures of Manganese Complexes based on the Liagnd 3‐Pytza or Mixed Ligands [3‐Pytza = 5‐(3‐Pyridyl)tetrazole‐2‐acetato]

“…[13][14][15] Inspired by the efforts of Xiong and coworkers, [16,17] we are dedicated to investigate pyridinetetrazole-carboxylate ligands and, to some extent, made some progress. [18][19][20][21] To extend our previous work, we have treated K3-pytza [K3-pytza = 5-(3-pyridyl) tetrazole-2-acetato potassium salt] with MnCl 2 ·4H 2 O and 4,4Ј-bipy or mixed ligands with 4,4Ј-bipy in order to investigate whether or not the auxiliary ligand will have an effect on the structure of our targeted molecule. By reaction of K3-pytza, MnCl 2 ·4H 2 O and 4,4Ј-bipy, two new coordination compounds, namely, 1D [Mn(3-pytza) 2 (H 2 O) 2 ]·2H 2 O (1) and 2D [Mn(3-pytza) 2 (4,4Ј-bipy)] (2) were obtained.…”