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Topic: Transition Metal Sulphides  (Read 4030 times)

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Offline Francopper

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Transition Metal Sulphides
« on: May 19, 2010, 10:51:16 PM »
Hi to everybody.

I have to prepare a class on the group 16 and I can't manage to find thermodynamical information about transition metal sulphides. I've searched all over the Internet and I have drawn the conclusion that either I'm very bad at looking for such information or it is not even documented yet. Does anyone know where to find data such as enthalpy of hydration, enthalpy of solvation or lattice enthalpy for compounds like FeS2, HgS, Ag2S, etc.?

On a related issue, there is an explanation for the very low solubility of these compounds other than the increase of covalent character of the bond? Are there entropic factors involved?

Thanks you all.
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Those who have handled sciences have been either men of experiment or men of dogmas. The men of experiment are like the ant, they only collect and use; the reasoners resemble spiders, who make cobwebs out of their own substance. But the bee takes a middle course: it gathers its material from the flowers of the garden and of the field, but transforms and digests it by a power of its own. - Francis Bacon, Aphorism 95, Novum Organum, Book I

Offline DemonicAcid

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Re: Transition Metal Sulphides
« Reply #1 on: May 20, 2010, 12:51:47 AM »
Have you checked the library for sulfides and chalcogens?
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Offline Francopper

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Re: Transition Metal Sulphides
« Reply #2 on: May 20, 2010, 01:18:38 AM »
If you mean my university library, yes I have checked every inorganic chemistry book and it seems to be such specific data I'm looking for that it is not even mentioned. Any idea of were to find it on line?
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Those who have handled sciences have been either men of experiment or men of dogmas. The men of experiment are like the ant, they only collect and use; the reasoners resemble spiders, who make cobwebs out of their own substance. But the bee takes a middle course: it gathers its material from the flowers of the garden and of the field, but transforms and digests it by a power of its own. - Francis Bacon, Aphorism 95, Novum Organum, Book I

Offline DemonicAcid

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Re: Transition Metal Sulphides
« Reply #3 on: May 20, 2010, 06:02:40 AM »
I don't know what to say. It's a rich subject and many books are written on it. Many libraries have entire sections devoted to the subject of chalcogens. Since you're looking for thermodynamic data, have you tried the CRC?
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Offline Francopper

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Re: Transition Metal Sulphides
« Reply #4 on: May 20, 2010, 07:58:40 PM »
Hey, hadn't thought of that! I checked the CRC and I could find a couple of lattice energies, but still there is a lot of data that can't be found, I guess it hasn't been studied yet.
Thanks a lot.
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Those who have handled sciences have been either men of experiment or men of dogmas. The men of experiment are like the ant, they only collect and use; the reasoners resemble spiders, who make cobwebs out of their own substance. But the bee takes a middle course: it gathers its material from the flowers of the garden and of the field, but transforms and digests it by a power of its own. - Francis Bacon, Aphorism 95, Novum Organum, Book I
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