Formation and structure of novel ternary complexes of thallium(III)cyanide-amine (ethylenediamine and triethylenetetramine) in solution and in solid

• A novel ternary Tl(III) complex [Tl(en)(2)(CN)](2+) has been synthesized and characterized in solution by NMR and in solid by Raman spectroscopy. This complex has been prepared in the solid state, [Tl(en)(2)(CN)](ClO4)(2) (1), and the related [Tl(tren)(CN)(2)](ClO4) (2), and their crystal structures determined by X-ray diffraction. A linear cyano-bridged supramolecular complex exists in [Tl(en)(2)(CN)](ClO4)(2). In [Tl(tren)(CN)(2)](ClO4), the thallium ion exists in a distorted octahedral geometry cis coordinated cyanides.

Nyckelord

thallium

cyano bridge

ethylenediamine

triethylenetetramine

multinuclear NMR

ternary complexes

nuclear magnetic-resonance

aqueous-solution

cyanide complexes

tl-205 nmr

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