The compounds of formula [Cu(bipy)(acleuO)2] (1) and [Cu(bipy)(ts-β-alaO)2] (2) (bipy = 2,2′-bipyridil, acleuO = N-acetyl-DL-leucinate anion, ts-β-alaO = N-tosyl-β-alaninate anion) were synthesized and characterized by means of spectroscopic and structural measurements. Complex (1) crystallizes in the monoclinic space group C2/c with cell parameters a = 17.465(4), b = 19.740(5), c = 9.080(2) Å, β = 115.0(1)° with Z = 4; complex (2) crystallizes in the triclinic space group PView the MathML source, with cell parameters a = 14.489(3), b = 14.308(3), c = 8.659(1) Å, α = 75.0(1), β = 74.6(1), γ = 66.6(1)°, Z = 2. Both structures were solved by conventional Patterson and Fourier methods and refined to R factors of 4.10 and 3.8% respectively. In both crystals the Cu atom is four-coordinated by the nitrogen atoms of a bipy molecule and two carboxylate oxygens of two N-protected aminoacid anions acting as unidentate ligands. The only significant difference between the coordination geometry of (1) and (2) is in the tetrahedral distortion of the coordination plane. Complex (2) is strictly planar, while in complex (1) the distortion expressed by the dihedral angle between the (N)(1)CuN(1′) and O(1)CuO(1′) planes is 20.8°. The electronic and EPR results agree with these different coordination geometries. The infra-red data are consistent with a truly monodentate carboxylate group. The spectroscopic results on a series of previously investigated [Cu(bipy)(N-protected aminoacidato)2] complexes of unknown structures are discussed again in the light of the present structural reports.

Spectroscopic and structural investigation on two (2,2'-bipyridyl) bis(N-protected aminoacidato)copper(II) complexes. Two compounds containing truly CuN202 chromphore / Antolini, Luciano; Menabue, Ledi; Saladini, Monica; L. P., Battaglia; Corradi, Anna. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - STAMPA. - 90:(1984), pp. 97-103. [10.1016/S0020-1693(00)88040-8]

Spectroscopic and structural investigation on two (2,2'-bipyridyl) bis(N-protected aminoacidato)copper(II) complexes. Two compounds containing truly CuN202 chromphore.

ANTOLINI, Luciano;MENABUE, Ledi;SALADINI, Monica;CORRADI, Anna
1984

Abstract

The compounds of formula [Cu(bipy)(acleuO)2] (1) and [Cu(bipy)(ts-β-alaO)2] (2) (bipy = 2,2′-bipyridil, acleuO = N-acetyl-DL-leucinate anion, ts-β-alaO = N-tosyl-β-alaninate anion) were synthesized and characterized by means of spectroscopic and structural measurements. Complex (1) crystallizes in the monoclinic space group C2/c with cell parameters a = 17.465(4), b = 19.740(5), c = 9.080(2) Å, β = 115.0(1)° with Z = 4; complex (2) crystallizes in the triclinic space group PView the MathML source, with cell parameters a = 14.489(3), b = 14.308(3), c = 8.659(1) Å, α = 75.0(1), β = 74.6(1), γ = 66.6(1)°, Z = 2. Both structures were solved by conventional Patterson and Fourier methods and refined to R factors of 4.10 and 3.8% respectively. In both crystals the Cu atom is four-coordinated by the nitrogen atoms of a bipy molecule and two carboxylate oxygens of two N-protected aminoacid anions acting as unidentate ligands. The only significant difference between the coordination geometry of (1) and (2) is in the tetrahedral distortion of the coordination plane. Complex (2) is strictly planar, while in complex (1) the distortion expressed by the dihedral angle between the (N)(1)CuN(1′) and O(1)CuO(1′) planes is 20.8°. The electronic and EPR results agree with these different coordination geometries. The infra-red data are consistent with a truly monodentate carboxylate group. The spectroscopic results on a series of previously investigated [Cu(bipy)(N-protected aminoacidato)2] complexes of unknown structures are discussed again in the light of the present structural reports.
1984
90
97
103
Spectroscopic and structural investigation on two (2,2'-bipyridyl) bis(N-protected aminoacidato)copper(II) complexes. Two compounds containing truly CuN202 chromphore / Antolini, Luciano; Menabue, Ledi; Saladini, Monica; L. P., Battaglia; Corradi, Anna. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - STAMPA. - 90:(1984), pp. 97-103. [10.1016/S0020-1693(00)88040-8]
Antolini, Luciano; Menabue, Ledi; Saladini, Monica; L. P., Battaglia; Corradi, Anna
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/732650
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 7
social impact