Comparative peculiarities of polytypy of crystals Cu(D-Ala)(L-Ser) and Cu2(D-Ala)(L-Ala)(D-Ser)(L-Ser)
Atomic structures of two polytypic modifycations of crystals of mixed cooper (II) com- pound Cu(D-Ala)(L-Ser) with optically active α-alanine (Ala) and serine (Ser) were studied by the electron diffraction analysis method: modification I - a=9.26(2) Å, b=9.60(1) Å, c=4.98(1) Å, γ=91.2(3)°, Z=2,...
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| Autores principales: | , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2008
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/6355993077bd44479b5356d8d9ede746 |
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| Sumario: | Atomic structures of two polytypic modifycations of crystals of mixed cooper (II) com-
pound Cu(D-Ala)(L-Ser) with optically active α-alanine (Ala) and serine (Ser) were studied
by the electron diffraction analysis method: modification I - a=9.26(2) Å, b=9.60(1) Å,
c=4.98(1) Å, γ=91.2(3)°, Z=2, space group of symmetry P21; modification II - a=18.52(2) Å,
b=9.60(1) Å, c=4.98(1) Å, γ=91.2(3)°, Z=4, space group of symmetry C21.
It was demonstrated that the modifications of the crystals of two compounds Cu(D-
Ala)(L-Ser) and Cu2(D-Ala)(L-Ala)(D-Ser)(L-Ser) with racemic amino acids, correspond-
ingly, belong to the same family of polytypic modifications. |
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