Molar volumes of metal complex ions in water. Part 1.—Hexaammine and trisdiamine complexes

Partial molar volumes for inorganic complexes

“…[25] Except for the cyanide complexes, all sources are referenced in the text or footnotes. a Mean value from references [26,27]. b Recommended value based on data in references [26-30, and references cited therein]; consistent values of 58, 60, and 56 cm 3 mol À1 have been determined from the chloride, triflate, and nitrate salts, respectively -albeit at 293 K rather than at 298 K [88][89][90].…”

“…All the partial molar volume values for anions are positive; however, the very small values for fluoride and carbonate suggest that solvation of these hydrophilic species is almost balancing the intrinsic size contribution to the overall partial molar volume. Table 2 [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] lists values for the partial molar volumes of a range of binary (homoleptic) complexes ML nAE 6 and MðLLÞ nAE 3 , where L and LL are mono-and bidentate ligands, respectively. The partial molar volume of CrðNH 3 Þ 3þ 6 is larger than that of CrðOH 2 Þ 3þ 6 (V i ¼ 57.0 cm 3 mol À1 ) [27], in contrast to À53.0 cm 3 mol À1 for Cr 3þ ( similarly has a larger value (127 cm 3 mol À1 [27,29] than CoðenÞ 3þ 3 , whose recommended value (V i ¼ 121 cm 3 mol À1 ) is based on data in references [25,27,29,38] [38,40,41], although the value reported for Znð phenÞ 2þ 3 is, unexpectedly, not smaller than that for Cuð phenÞ 2þ 3 [40].…”

Molar volumes of metal complex ions in water Part 2.Hexahalogeno, hexacyano and tris(ethane-1,2-dioate) complexes

“…In addition, the inert metal complex ion interacts with solvent water electro-¤ Part 1 : ref. 5. statically because its central atom cannot form any complex with solvent water molecules.…”