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1 For a recent study on related platinum complexes, see:
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3 E. Tom ´a s-Mendivil, F. J. Su ´a rez, J. D ´ı ez and V. Cadierno,
Chem. Commun., 2014, 50, 9661.
the chloride ligands in complexes [RuCl
2
(h -arene)(PR
3
)]
readily takes place in polar media, the generation of
6
2+
coordinatively unsaturated [Ru(h -arene)(PR ) ] dications
3
2
6
+
from compounds [RuCl(h -arene)(PR ) ] generally requires
their treatment with a chloride abstractor. See, for
3
2
1
example: (a) H. Le Bozec, D. Touchard and P. H. Dixneuf,
Adv. Organomet. Chem., 1989, 29, 163; (b) M. A. Bennett, in
Comprehensive Organometallic Chemistry II, ed. E. W. Abel,
F. G. A. Stone and G. Wilkinson, Pergamon Press, Oxford,
1995, vol. 7, pp. 549–602; (c) M. A. Bennett, Coord. Chem.
Rev., 1997, 166, 225; (d) J. Gimeno, V. Cadierno and
P. Crochet, in Comprehensive Organometallic Chemistry III,
ed. R. H. Crabtree and D. M. P. Mingos, Elsevier, Oxford,
2007, vol. 6, pp. 465–550; (e) J. Gimeno and V. Cadierno, in
Comprehensive Organometallic Chemistry III, ed. R. H.
Crabtree and D. M. P. Mingos, Elsevier, Oxford, 2007, vol.
6, pp. 551–628.
1
1
1
6
4 The utility of related [RuX (h -arene){PR (OH)}] (arene ¼
2
2
n
C
6
H
6
, p-cymene, C
6
Me
6
; X ¼ Cl, Br, I; R ¼ Ph, Bu; not all
combinations) complexes, including 2b (Fig. 1) whose
synthesis and characterization are fully described here, for
nitrile hydration reactions has been the subject of a recent
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RSC Adv., 2014, 4, 63466–63474 | 63473