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Full-Text Articles in Physical Sciences and Mathematics
Thermodynamics Of Ion Association In Aqueous Fluoride Solutions. Determination Of Stability Constants For (Naf), (Mgf)+ And (Caf)+ Ion Pairs, Waldo Zamorano-Santander
Thermodynamics Of Ion Association In Aqueous Fluoride Solutions. Determination Of Stability Constants For (Naf), (Mgf)+ And (Caf)+ Ion Pairs, Waldo Zamorano-Santander
Masters Theses
Stoichiometric ion-association constants were determined at several ionic strengths for (NaF) over the temperature range 15-40°C and for (MgF)+ and (CaF)+ over the temperature range 25-45°C using fluoride ion selective electrode measurements.
Thermodynamic association constants, K°, were obtained through extrapolation of the stoichiometric values to infinite dilution. Values of K° for (NaF) are 1.70, 2.16 and 2.54 at 15, 25 and 40°C, respectively. The K° values for (MgF)+ are 73.4, 88.0 and 98.2, and for (CaF)+ are 13.7, 17.5 and 21.9 at 25, 35 and 45°C., respectively.
The stoichiometric association constants for (NaF) can be reproduced …
Bimetallic Complexes Of Tungsten And Mercury, Zakariah Abdullah
Bimetallic Complexes Of Tungsten And Mercury, Zakariah Abdullah
Masters Theses
A tungsten-mercury bimetallic complex [(CO)4W(PPh2CH2CH2PPh2)2HgCl2]n has been synthesized from the reaction of trans-(CO)4W(η1-PPh2CH2CH2PPh2)2 and HgCl2. The value of n has not been determined due to the insolubility of the complex. The anologous reaction with HgI2 gave an insoluble, uncharacterizable complex, which best corresponds to (CO)4W(PPh2CH2CH2PPh2)2Hg2I4.
The geometry about tungsten in [(CO)4 …
Bimetallic Tungsten Carbonyl Complexes, Jin-Guu Wang
Bimetallic Tungsten Carbonyl Complexes, Jin-Guu Wang
Masters Theses
Two heterobimetallic complexes, [(CO)4W(PPh2CH2CH2-PPh2)2MCl2]n ( M = Pd or Pt ), were prepared from the reaction of trans-W(CO)4(ŋ1-PPh2CH2CH2PPh2) 2 with M(COD)Cl2 (COD = cyclooctadiene). A trans arrangement about tungsten was found for both the palladium and platinum complexes. The square planar palladium center was shown to have a trans geometry in solution while a cis arrangement for the platinum moiety was observed. Far infrared studies indicated a mixture of cis and trans …