Vibrational spectra of nitrogen-15-substituted hexa-amminenickel(II) chloride, hexa-amminecobalt(III) chloride, and tetra-amminezinc(II) iodide

Abstract

I.r. spectra of [Ni(¹⁵NH₃)₆]Cl₂ and [Co(¹⁵NH₃)₆]Cl₃ and Raman and i.r. spectra of [Zn(¹⁵NH₃)₄]I₂ are reported and compared with the spectra of the normal ammines. The ¹⁴N–¹⁵N isotope shifts can be used to solve some assignment problems. Reliable skeletal force constants have been calculated by use of the nitrogen isotope shifts as additional data.