Voltar
Artigo
BIBTEX RIS

Thermodynamic considerations in co-ordination. Part XXI. Structures of copper(II)–asparaginate, –histidinate, and –threoninate ternary complexes in aqueous solution

1975; Royal Society of Chemistry; Issue: 18 Linguagem: Inglês

10.1039/dt9750001757

ISSN

2050-5671

Autores

Allan C. Baxter, David R. Williams,

Tópico(s)

Lanthanide and Transition Metal Complexes

Resumo

Thermodynamic-based structures are suggested for [Cu(AsnO)(HisO)], [Cu(AsnO)(HHisO)]+, [Cu(AsnO)-(ThrO)], [Cu(HisO)(ThrO)], and [Cu(HHisO)(ThrO)]+ in aqueous solution at 25 °C and I= 3.00M(Na[ClO4]). Histidinate (HisO) appears to be tridentate to CuII, threoninate (ThrO) bidentate, and asparaginate (AsnO) ambivalent. The site of proton attachment in the protonated complexes is the primary amine nitrogen of histidinate (HHisO). Values of ΔG⊖, ΔH⊖, and ΔS⊖ for formation of all these complexes are reported.

Referência(s)