Structure of Methanol Solvated Iodozinc(II) Complexes in Solution

Sammanfattning

The structures of the solvated zinc ion and the solvated zinc-iodide complexes in methanol solution have been determined by EXAFS. The zinc ion is six-coordinated in an octahedral fashion with a mean Zn-O bond distance of 2.071(4) . According to the stability constants of the zinc-iodide system in methanol solution the first complex, ZnI+, is suppressed, which may indicate that a coordination change takes place at this step. On the other hand, the second complex, ZnI2, predominates at excess of iodide. The methanol solvated ZnI2 complex has a tetrahedral structure with mean Zn-I and Zn-O bond distances of 2.55(1) and 1.99(1) , respectively. The mean Zn-I bond distance in a solution containing a maximal content of ZnI+, ca. 12%, strongly indicates that the first complex also has a tetrahedral structure.

Nyckelord

Zinc(II) iodide; Methanol; Structure in solution; EXAFS

Publicerad i

Journal of Solution Chemistry
2018, Volym: 47, nummer: 3, sidor: 560-567
Utgivare: SPRINGER/PLENUM PUBLISHERS

SLU författare

• Persson, Ingmar

  • Institutionen för molekylära vetenskaper, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Fysikalisk kemi


Publikationens identifierare

DOI: https://doi.org/10.1007/s10953-018-0737-9

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/94923