| http://www.w3.org/ns/prov#value | - are reacted with MSH or M2 Sy, wherein M is a metal ion and y is a statistical average with a number between 2 and 6 or with M2 S and S, wherein M is a metal ion, optionally in a solvent and optionally at reaction temperatures between 20??? C. and 150??? C. and optionally under catalytic conditions under pressures between normal pressure or an increased pressure of up to 6 bar, to give compounds o
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