Silver thermodynamic data

Table 1 Some Thermodynamic Data for Complex Silver Cyanides1,2...

Classical methods of group analysis and separation take advantage of the stability of the [Ag(NH3)2]+ ion to separate silver from mercury. Treatment of a precipitate containing AgCl with dilute ammonia leads to the reaction in equation (3) bringing the silver into solution. To confirm the presence of Ag+, nitric acid must then be added to cause reprecipitation of AgQ. In aqueous ammonia, the diammine was the highest species formed, and thermodynamic data for its formation are collected in Table 3.20-23... 

Table 3 Some Thermodynamic Data for the Formation of Silver(I) Ammines at...

Table 6 Some Thermodynamic Data for Silver Complexes of Primary Amines...

Table 8 Thermodynamic Data for Silver(I) Ethylenediamine Complexes...

The complexes of silver(I) ions with substituted pyridines are well known and some representative thermodynamic data for their formation are included in Table 13.81-83 Several attempts have been made to correlate the stability of the silver complexes with the basicity of the substituted pyridines.81,82 In general, a linear relationship between the logarithm of the formation constants and the pKa of the free bases was found to exist. 

Silver(I) complexes can also be obtained when the pyridyl N becomes quatemized, if the aliphatic group contains an amine. Thermodynamic data for silver complexes with ligands of the type C5H5N+(CH2) NH (n = 2-5) are given in Table 16.88,89... 

Table 16 Thermodynamic Data for some Silver(I) Complexes of (o-Aminoalkylpyridinium Complexes88 89...

Silver(I) complexes of pyrazine were first reported in 1895." Since then there have been numerous reports on the preparation and properties of pyrazine complexes of silver(I).85 Thermodynamic data for some of these complexes are given in Table 18. 

From studies of the reaction between silver and thiosulfate ions, a large number of complex ions have been suggested to exist in solution. The available thermodynamic data for these species are collected in Table 33.239,240... 

Complex ions of the type Ag(02CR)J and Ag2(02CR)+ have been proposed to exist in solution, based on measurements of solubility in water and in mixed solvents. Some thermodynamic data for silver carboxylates are given in Table 35.253,254... 

The preparation and structural investigation of silver(I) thiourea complexes have been the subject of numerous reports.340 In solution, the formation of stable, mononuclear complexes containing up to four thiourea groups has been proposed and the associated thermodynamic data are collected in Table 47. -342... 

A wide range of ligands of the type RXCH2C02H where R = alkyl, alkenyl or aryl and X = S, Se or Te have been reacted with silver ions and thermodynamic data for some representative examples are given in Table 49.358,359 The silver-selenium complexes were found to be more stable than their silver-sulfur analogues as a result of both larger favourable enthalpy and smaller unfavourable entropy changes. 

Ligands of the type X(CH2CH2C02H)2 (X = O, S, Se or Te) were synthesized and then-reactions with silver(I) ions studied. Thermodynamic data for their formation are also given in... 

When side chains containing alkenic groups were introduced, it was found that the stability was generally higher than in amino adds having fully saturated side chains. Interaction of the silver ion with the alkene was proposed to account for this increase in stability. 00 Thermodynamic data for the formation of some silver(I) amino acid complexes are collected in Table 54.398 04,411... 

Thermodynamic data for the formation of Ag(TSC)3 are given in Table 58.437 Based on the similarity of the stability of this complex and the analogous thiourea complex, the ligand was proposed to be monodentate. The IR spectra of [Ag2(TSC)3](NC>3)2438 and of Ag(TSC)Cl439 were also interpreted in terms of silver-sulfur bonding only. 

A comprehensive review of synthetic macrocycles gave detailed tabulations of preparations, effects of binding sites and thermodynamic data known up to 1973.456 Table 60 gives thermodynamic data for the formation of silver(I) crown ethers in aqueous solution and includes several more recent figures.457,458... 

Table 61 Thermodynamic Data for the Reaction of some Macro-cyclic Ligands with Silver(I) in Methanol at 25 °C...

Densities of the silver salts are listed in Table 7.22, transitions in Table 7.23, and thermodynamic data at 298.15 K in Table 7.24. Thermodynamic data for AgC103 are listed in Table 7.25. 

Thermodynamic Data fob Silver Salt-Monoolbfin Complexes ... 

A previous study 20> on silver complexes of cyclic olefins had revealed that ring strain appeared to facilitate deformation of the 7r-orbitals for complex formation, i.e. the more strained is the cyclic compound, the more reactive it is in electron donating roles. The thermodynamic data for complex formation at... 

Table 3. Thermodynamic data for silver-ion complex formation in aqueous solution...

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