Synthesis, thermal behaviour and crystal structure of RbSrP 3 O 9 ·3 H 2 O

Chemical preparation and XRD data for a new triphosphate CuNa3P3O10 and two cyclotriphosphates SrRbP3O9·3H2O and SrRbP3O9

“…During the thermal behavior studies of triphosphates M II Na 3 P 3 O 10 ·12H 2 O of sodium and divalent cations M II ( M II =Cu 2+ , Co 2+ , Zn 2+ , Mn 2+ , Cd 2+ , Mg 2+ , and Ni 2+ ) by Jouini (1983) and Jouini et al (1984), a new form triphosphate CuNa 3 P 3 O 10 ·12H 2 O was reported. Systematic investigations of cyclotriphosphates of strontium and monovalent cations Sr M I P 3 O 9 ·3H 2 O ( M I =K + , Tl + , Rb + , and NH 4 + ) were also reported (Sbai et al , 2002, 2003; Belaaouad 2002; Belaaouad et al , 2000, 2009; El Kababi, 2000; El Kababi et al , 2000).…”

Chemical preparation, crystallographic characterization, thermal behavior and IR studies of two new cyclotriphosphates SrKP3O9·3H2O and SrKP3O9

“…This value of the activation energy of SrKP 3 O 9 ·3H 2 O is the same as that obtained for SrRbP 3 O 9 ·3H 2 O in air by non-isothermal method ( Table 3). This result is in favor of the isotypy of the cyclotriphosphates SrKP 3 O 9 ·3H 2 O and SrRbP 3 O 9 ·3H 2 O [2]. Characteristic temperatures at maximum dehydration rates, Tm, for both cyclotriphosphates SrKP 3 O 9 ·3H 2 O and SrRbP 3 O 9 ·3H 2 O are shown in Table 2.…”

“…The domain 1400-650 cm −1 , characteristic of the valence vibration bands of the cycle [1][2][3][4][8][9][10][11][12][13][14][15][16], as well as possible bands due to interactions between P 3 O 9 cycles and water molecules and also water vibration modes will be examined on the basis of our thirty IR calculated frequencies of the P 3 O 9 ring within Cs symmetry. This infrared study is also made in the light of the frequencies displacements during theoretical isotopic substitutions of the equivalent atoms (3P, 3Oi and 6Oe) belonging to the P 3 Oi 3 Oe 6 ring (Cs) and the IR spectra of the isotypic compounds, whose crystal structure was solved by X-ray diffraction, SrM I P 3 O 9 ·3H 2 O (M I = Rb + , NH 4 + , Tl + and K + ), in relation to their crystalline structure.…”

“…1b) which exhibits the IR absorption bands characteristic of a cyclic phosphate (Fig. 2b) [1][2][3][4][8][9][10][11][12][13][14][15][16].…”

“…During a systematic investigation of cyclotriphosphates of strontium and monovalent cations M I , SrM I P 3 [2,3] and SrTlP 3 O 9 [4] have already been prepared. Their structure has been determined and their thermal behavior has been studied.…”