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DOI: 10.1039/A907853C (Paper) Reference Section for: Chem. Commun., 1999, 2387-2388

Bi-edge condensation of imido–rhodium clusters leading to novel planar hexametallic structures

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Cristina Tejel, Marta Bordonaba, Miguel A. Ciriano, Fernando J. Lahoz and Luis A. Oro

Abstract

Oxidation of [N(PPh3)2][Rh3(µ-NC6H4Me-p)2(CO)6] with [FeCp2]PF6 gives the novel hexarhodium compound [{Rh3(µ-NC6H4Me-p)2(CO)6}2], containing three nearly coplanar condensed metallic cycles forming a doubly-spiked square, by dimersisation of the trinuclear imidocomplex through the formation of unsupported metal–metal bonds.

References

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  5. The analytical data for 1(Anal. Calc. for C56H44N3O6P2Rh3: C, 54.88; H, 3.62; N, 3.43. Found: C, 55.12; H, 3.71; N, 3.28%) are in accord with the proposed formulation, and the spectroscopic data are essentially identical to those described for the anion in [Rh(CO)(dppm)2][Rh3(µ-NC6H4Me-p)2(CO)6].
  6. IR (CH2Cl2, cm–1): v(CO)/cm–1 2062s, 2046s, 2021m, 2002m. 1H NMR (300 MHz, CDCl3, room temp.): δ 6.316 (s, 4H), 2.039 (s, 3H). 13C{1H} NMR (75 MHz, CDCl3, room temp.): δ 187.5 (d, JRhC 63 Hz, 8C, CO), 187.4 (d, JRhC 75 Hz, 4C, CO), 164.8 (m, ipso-C), 135.1(p-C), 127.3(m-C), 120.4(q, JRhC 1.3 Hz, o-C), 20.5(Me).
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