Structural and Spectroscopic Studies of Rhodium-(I) and -(III) Nitrato Complexes

DOI: 10.1039/DT9920002533

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2533 - 2538 (1992)

Update date:2022-07-29

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Authors:

Heaton, Brian T.

Iggo, Jonathan A.

Jacob, Chacko

Blanchard, Helen

Hursthouse, Michael B.

et al. et al.

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Article abstract of DOI:10.1039/DT9920002533

Refluxing Rh(NO3)3*2H2O with an excess of PPh3 in MeOH or EtOH for over 48 h gives trans- 1 whereas the same reaction at room temperature gives predominantly 2.X-Ray structure determinations of 1 and 2 show the nitrate groups to be monodentate in each case although disorder of the CO and NO3 groups in 1 precludes accurate determination of bond lengths and angles.There is no reaction of trans- (X = Cl, F or ONO2) with H2 at room temperature and 1 atm pressure, whereas there is an intermediate reaction of under the same conditions to give 3, which has been characterised by multinuclear NMR spectroscopy.Compound 3 loses PPh3 to give 6a which has been characterised similarly and by X-ray crystallography; although the metal-bound hydrogens were not located the structure is clearly based on an octahedral geometry with trans phosphines and a bidentate nitrate.

Full text of DOI:10.1039/DT9920002533

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