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1. Combination of a binaphthol-derived phosphite and a C1-symmetric phosphinamine generates heteroleptic catalysts in Rh- and Pd-mediated reactionsThis article is part of a ChemComm ‘Catalysis in Organic Synthesis’ web-theme issue showcasing high quality research in organic chemistry. Please see our website to access the other papers in this issue (http://www.rsc.org/chemcomm/organicwebtheme2009).Electronic supplementary information (ESI) available: Experimental procedures, characterisation data for all new compounds, complexation experiments (along with copies of 31P- and 1H-NMR spectra), full screening of the ligands in the Rh- and Pd-catalysed reactions, and details of the DFT calculations. See DOI: 10.1039/b908167d

Author

Luca Pignataro, Benita Lynikaite, Raffaele Colombo, Stefano Carboni, Martin Krupika, Umberto Piarulli, and Cesare Gennari

Subjects
*POLYATOMIC molecules, *COMPLEX compounds synthesis, *AMINES, *RHODIUM catalysts, *PALLADIUM catalysts, *CHEMICAL reactions, *LIGANDS (Chemistry)
Abstract

Heteroleptic complexes, formed selectively by using a 1 : 1 combination of a σ-donor and a π-acceptor ligand, are involved in Rh- and Pd-catalysed reactions. [ABSTRACT FROM AUTHOR]

Published
2009
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2. A new type of iodosulfite ion formulated as I2SO22−Synthesis of 2: to an aqueous solution of 1(100 mL), which was prepared according to previously reported procedures,11SO2-saturated water (40 mL) was added and the solution was cooled to 5 °C. After standing for 12 h, yellow crystals precipitated.X-Ray crystallographic study for 2: X-ray diffraction data (12 432 reflections) were collected at 277 K on a Rigaku/MSC Mercury CCD system using graphite-monochromated Mo-Kα radiation (λ= 0.71073 ). A total of 3568 reflections were unique (Rint= 0.045). A crystal of 2was attached to a glass capillary using epoxy. All calculations were performed using the teXsan crystallographic software package from Molecular Structure Corporation.12The structures were solved by direct methods (SIR-97)13and refined by full-matrix least-squares techniques (SHELXL-97)14against F2. The non-hydrogen atoms were refined anisotropically. Hydrogen atoms were generated theoretically on the specific atoms and not refine

Author

Isoroku Nagasawa, Hideaki Amita, and Hiroshi Kitagawa

Subjects
*COMPLEX compounds synthesis, *PLATINUM compounds, *ANIONS, *SOLUTION (Chemistry), *CHEMICAL reactions, *CHEMICAL structure
Abstract

This paper deals with a notable halosulfite ion, (I2SO22−), which is a rare example of this inorganic anion species; the reaction of the platinum(ii) complex, [Pt(depe)2]I2with SO2afforded the complex, [Pt(depe)2](I2SO2) containing the rare anion; considering with the VSEPR concept, the structure of the anion could be interpreted as a distorted trigonal bipyramid. [ABSTRACT FROM AUTHOR]

Published
2009
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