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Monatshefte für Chemie / Chemical Monthly

, Volume 106, Issue 1, pp 261–270 | Cite as

Schiff base derivatives of lanthanons

Bifunctional tridentate Schiff base derivatives of La(III), Pr(III), and Nd(III)
  • S. K. Agarwal
  • Jai P. Tandon
Organische Chemie und Biochemie

Abstract

Bifunctional tridentate Schiff bases such as,
$$\begin{gathered} HOC_6 H_4 C(CH_3 ) : NCH_2 CH_2 OH, \hfill \\ HOC_6 H_4 C(CH_3 ) : NCH_2 CH_2 (OH)CH_3 , \hfill \\ HOC_6 H_4 C(H) : NCH_2 CH_2 OH \hfill \\ \end{gathered} $$
and HOC6H4C(H)∶NCH2CH(OH)CH3 react with La(III), Pr(III) and Nd(III) isopropoxides to 1∶1 and 2∶3 derivatives of the type,Ln(O−i-C3H7)(OC6H4C[R]∶NR′O) andLn2(OC6H4C[R]∶ NR′O)3 [where,Ln=La(III), Pr(III) or Nd(III); R=CH3 or H and R′=CH2−CH2 or CH2CHCH3] in dry benzene. The labile nature of the isopropoxy groups in the 1∶1 derivatives has been shown by exchange reactions with an excess oft-butyl alcohol leading to the formation ofLn(O−t-C4H9)(OC6H4C[R]∶NR′O); (where R=CH3 and R′=CH2CHCH3) type derivatives in almost quantitative yield. The IR spectra of the resulting derivatives have been recorded in the range of 4000–400 cm−1, ν C=N frequency bands appear at ≈ 1620 cm−1 and almost no change has been noted in their positions on complexation. Some new peaks are, however, observed in the range of 700–600 cm−1 and these may be ascribed to the ring deformation coupled with both theLn−O stretching and C−CH3 stretching modes.

Keywords

Alcohol Benzene Inorganic Chemistry Organic Chemistry Frequency Band 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • S. K. Agarwal
    • 1
  • Jai P. Tandon
    • 1
  1. 1.Department of ChemistryUniversity of RajasthanJaipurIndia

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