Lanthanum, praseodymium and neodymium chloroacetates

Krishnamurthy, S. S. ; Soundararajan, S. (1968) Lanthanum, praseodymium and neodymium chloroacetates Journal of the Less Common Metals, 16 (1). pp. 1-9. ISSN 0022-5088

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The monochloroacetates of lanthanum, praseodymium and neodymium of the composition M(ClCH2COO)3·2H2O have been prepared and characterised. The compounds behave as non-electrolytes in dimethylformamide. The infrared spectra are consistent with bidentate coordination of the carboxylate group and show the presence of two types of water molecules, coordinated, and free. With six oxygen atoms from the three acetato groups and one from the water bonded to the metal, a coordination number of seven has been assigned to the rare earths in these compounds. On pyrolysis, the chloroacetates lose water at ~130 °C and yield the oxychlorides at ~500 °C. The X-ray powder patterns of the chloroacetates have been indexed for the monoclinic system, with four molecules per unit cell.

Item Type:Article
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Deposited On:16 Nov 2010 12:40
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