N-substituted ethylcarbamate complexes of uranyl-nitrate and chloride

✍ Scribed by B. Zarli; G. Casotto; L. Sindellari; G. Faraglia

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 426 KB
• Volume: 31
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)94972-7

✦ Synopsis

With the N-substituted ethylcarbamates R,NC(O)-OC,H, (where R = C,Hs or C&IS) and RR'NC(O)-OCzHs (where R = H; R' = C,H,, CeH,, Cdr,(CHJ-CH, and R = C,H,; R' = C,H,) uranyl nitrate forms complexes of formula UOz(NO~)~*2Ligand, whereas with the chloride only U0,Cl,*2[CzHsNHC(0)OC,-H,] has been isolated. In addition the complexes U0,Cl,*2[(CHJ2NC(0)OC,H5] and UO,Cl,.3[CH,-NHC(O)OC,H,] are described. From the IR spectra the ligands appear to coordinate the metal through the carbonyl oxygen atom.

In the nitrato-complexes the anions act as chelate ligands leading to six-coordination in the equatorial plane of the uranyl group. For the I:2 chloro-complexes in the solid state a chloro-bridged dimeric structure is suggested.

. The IR and 'H nmr spectral data of the complexes are reported and discussed.