Comparative peculiarities of polytypy of crystals Cu(D-Ala)(L-Ser) and Cu2(D-Ala)(L-Ala)(D-Ser)(L-Ser)
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DIAKON, I., DONU, Sofia, CHAPURUNA, L.. Comparative peculiarities of polytypy of crystals Cu(D-Ala)(L-Ser) and Cu2(D-Ala)(L-Ala)(D-Ser)(L-Ser). In: Moldavian Journal of the Physical Sciences, 2008, nr. 2(7), pp. 177-181. ISSN 1810-648X.
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Moldavian Journal of the Physical Sciences
Numărul 2(7) / 2008 / ISSN 1810-648X /ISSNe 2537-6365

Comparative peculiarities of polytypy of crystals Cu(D-Ala)(L-Ser) and Cu2(D-Ala)(L-Ala)(D-Ser)(L-Ser)


Pag. 177-181

Diakon I.1, Donu Sofia2, Chapuruna L.3
 
1 Institute of Applied Physics, Academy of Sciences of Moldova,
2 Institute of the Electronic Engineering and Nanotechnologies "D. Ghitu" of the Academy of Sciences of Moldova,
3 Institute of Chemistry of the Academy of Sciences of Moldova
 
Disponibil în IBN: 13 decembrie 2013


Rezumat

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.