Connor, J.A. and Gobel, A. (1995) Thermochemistry of Thiolato Derivatives of Manganese Carbonyl - the Strength of Manganese-Sulfur Bonds. Polyhedron, 14 (20-21). pp. 3107-3110. ISSN 0277-5387.
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Calorimetric measurements of the thermal decomposition of [Mn-2(CO)(8)(SR)(2)] (R = CH3, C2H5) have been made in the temperature range T = 450-550 K. Analyses of the decomposition reactions indicate that the products include the sulphide, R(2)S, and manganese(II) sulphide. Using drop microcalorimetric methods, values were determined for the standard molar enthalpies of formation at 298 K of the crystalline compounds: Delta(f)H(m)(o)([Mn-2(CO)(8) (SCH3)(2)],Cr) -(1521 +/- 30) kJ mol(-1), Delta(f)H(m)(o)([Mn-2 (CO)(8)(SC3H5)(2)],cr) = -(1555+/-30) kJ mol(-1). These are combined with molar enthalpies of sublimation and other standard enthalpy contributions to provide an estimate of the Mn-S bond enthalpy contribution D(Mn-SR)= (162+/-5) kJ mol(-1). A group disruption model is also considered.
|Subjects:||Q Science > QD Chemistry|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Biosciences|
|Depositing User:||P. Ogbuji|
|Date Deposited:||05 Jun 2009 17:17|
|Last Modified:||08 May 2012 12:42|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/19768 (The current URI for this page, for reference purposes)|
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