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


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.


Alcohol Benzene Inorganic Chemistry Organic Chemistry Frequency Band 
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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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