A room temperature structure for anhydrous lead (II) decanoate

In‐situ spectroelectrochemical study of the growth process of a lead decanoate coating as corrosion inhibitor for lead surfaces

“…Average layer thickness is calculated using a density of 1.68 g cm −3 . [17] The data show an initially more rapid growth rate, in good agreement with both the XRD and EIS data. The mass cm −2 m is well fitted by behaviour of the type…”

“…High impedance correlates with a slower growth rate until more than 24 mmol of NaOH has been added, suggesting that solutions at a pH of just below 7 (low impedance, rapid growth) consist of larger crystallites which do not interlock very well allowing access to the lead surface. Assuming that the layer which grows is at the maximum density of 1.68 g cm −3 , [17] the range of mean growth rate is from 1.7 to 10 nm/min.…”

The interaction of long chain sodium carboxylates and sodium dodecylsulfate with lead(II) ions in aqueous solutions

“…In general, the data in this figure are in agreement with the behaviour seen by electrical conductivity and turbidity, and discussed in the previous sections. From the potentiometric data, two observations are worth noting: a) for all carboxylates, the association with Pb 2+ leads to a complex with a 2:1 stoichiometry (see Table 1), which is consistent with charge neutralization [58,64]; b) potentiometry seems to be more sensitive to study the detailed interaction of Pb 2+ with C 7 COO − than the other techniques. It is interesting that K 1 for Pb 2+ :C 7 COONa system is significantly lower than all other equilibrium constants, possibly reflecting the difficulty in the formation of the complex Pb(C 7 COO) + , which is consistent with the initial need for more surfactant to induce the formation of precipitate.…”

Powder X-ray diffraction, infrared and 13C NMR spectroscopic studies of the homologous series of some solid-state zinc(II) and sodium(I) n-alkanoates

“…The most intense peak in this region at ca. 742/722 and 720/ 695 cm À1 ascribed purely to the rocking vibration of the CH 2 group is highly sensitive to molecular packing, hence, it is extensively as seen from the literature to estimate crystal packing [34,35]. For example, if this band is sharp, hexagonal or triclinic packing is indicated, however, splitting as observed for the compounds reported in this study, indicates orthorhombic or monoclinic packing.…”