Complexing properties of 1,2-dihydroxy-3,4-diketocyclobutene with iron and nickel in ethanol
1985; Elsevier BV; Volume: 4; Issue: 10 Linguagem: Inglês
10.1016/s0277-5387(00)84161-3
ISSN1873-3719
Autores Tópico(s)Advanced Physical and Chemical Molecular Interactions
ResumoThe divalent chlorides of iron and nickel were reacted with 1,2-dihydroxy-3,4-diketocyclobutene (squaric acid) in ethanolic solution to form complexes of molecular formula [M(HC4O4)(Cl)(C2H5OH)]2·C2H5OH in which the metal ions show penta-coordination. Both complexes are hygroscopic and on exposure to air undergo changes indicating change of coordination number. However, only the iron complex undergoes a change in oxidation state as well.
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