Samarium spectroscopic techniques

Complexes of lapachol with diverse metals like copper (II), iron (II), iron (III), chromium (III), aluminium (IE), yttrium (El), samarium (IE), gadolinium (IE), and dysprosium (IE) have been investigated [141-144]. Direct electrochemical synthesis of some metal derivatives of lapachol have been carried out [145]. Several P-lapachone hydrazo compounds were synthesized and characterized using spectroscopic techniques including X-ray analyses [146]. Selective aromatic reduction in pyranonaphthoquinones has also been reported [147-148]. 

In a very stimulating work, the molecular hydrides LnH2(THF)2 (Ln = Sm or Eu) were prepared by hydrogenolysis of the naphthalene complexes of divalent samarium and europium, CioH8Ln(THF)2 (Ln = Sm or Eu), and of the stilbene compound of samarium(II), (PhCHCHPh)Sm(DME)2, in THF. The resulting complexes were characterized by conventional spectroscopic techniques. Both hydrides will polymerize styrene but are inactive toward propylene. The reac-... 

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