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SM ISO690:2012 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 | |
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Pag. 177-181 | |
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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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