Structural Diversity in Zinc Phosphates and Phosphinates: Observation of a Lattice Water Dimer Sandwiched Between Phosphoryl Oxygen Atoms

Abstract

O) (4) have been obtained from similar reactions by the use of diphenylphosphinic acid (dppi-H) and phenylphosphinic acid (ppi-H), respectively. The high steric bulk of the dtbp ligand results in the formation of the cationic complex 1, where only one of the dtbp ligands is directly coordinated to the metal atom, leaving the second dtbp molecule as the counter anion. The inorganic core of dinuclear zinc phosphate 2 resembles the single four-ring (S4R) secondary build-

{[VIV14VV4O42(H2O)][Ni(C4N3H13)(C4N3H14)]4(H2O)6}4+: a novel nanosized calix-type polyoxovanadate cation

“…[17][18][19][20][21][22][23][24][25][26][27][28][29] X-Ray diffraction experiments and high-level ab initio calculations have confirmed the distance of the neutral water dimer(2.976 A as theoretically predicted 30 ) (Fig.S1 †). Because two water molecules (O3w and O4w) are located in the calix, the distance between O4w and O3w in1 at low temperature (196 K) is 2.74(1) A, which is a little smaller than 2.976 A.…”

Amorphous carbon film deposition on the inner surface of tubes using atmospheric pressure pulsed filamentary plasma source

“…Analysis of FTIR-ATR spectra of the deposited films indicates the presence of aliphatic C-H groups in the film through their characteristic absorption. All the spectra have the peaks at 2954, 2926 and 2870 cm -1 corresponding to CH 3 asymmetric stretch, CH 2 asymmetric stretch and CH 2 symmetric stretch, respectively [22][23][24][25], indicating the presence of hydrogenated sp 3 carbon in the film (figure 4). Presence of strong peak at around 1650 cm -1 shows the presence of double bonded sp 2 carbon on the surface of the film [26,27].…”

Pulsed corona plasma source characterization for film deposition on the inner surface of tubes

“…The film obtained during the positive corona exhibits peaks at 2958, 2932 and 2872 cm -1 corresponding to CH 3 asymmetric stretch, CH 2 asymmetric stretch and CH 2 symmetric stretch, respectively [46][47][48][49], indicating the higher composition of hydrogen in the hydrocarbon film ( figure 12). For the film obtained during the negative corona discharge, the presence of mainly two peaks at 2918 and 2849 cm -1 in the aliphatic C-H stretching region corresponding to CH 2 asymmetric stretch and CH 2 symmetric stretch, respectively, is indicating the presence of long hydrocarbon polymeric chain in the film [50].…”