| Abstract |
The new aqua-soluble rhodium(I) complex trans-[RhCl2(PTA)(PTAH)] (1) \PTAH = N-protonated form of 1,3,5-triaza-7-phosphaadamantane (PTA)\ has been synthesized via the reaction of trans[ RhCl(CO)(PTA)(2)] with aqueous HCl or N-chlorosuccinimide, or by the treatment of RhCl3 with PTA. Compound 1 has been characterized by IR, H-1 and P-31\H\ NMR spectroscopies, ESI-MS(+), elemental and single crystal X-ray diffraction analyses, the latter showing a square planar \RhCl2P2\ geometry. Besides, the stepwise addition of diluted HCl to an aqueous solution of trans-[RhCl(CO)(PTA)(2)] has been monitored by P-31\H-1\ NMR and ESI-MS(+) techniques, allowing to detect a number of intermediate Rh(I) species. (C) 2011 Elsevier B.V. All rights reserved. |
