|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
The Crystal-Chemical Features of Phases and the Nature of the Coordination Bond in the System [CuxNi(1 – x){N(CH2PO3)3}]Na4 · nH2O (x = 0–1)статья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 28 октября 2020 г.
- Авторы: Somov N.V., Chausov F.F., Lomova N.V., Vorob’yov V.L., Kazantseva I.S., Sapozhnikov G.V., Zakirova R.M.
- Журнал: Crystallography Reports
- Том: 65
- Номер: 5
- Год издания: 2020
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 726
- Последняя страница: 739
- DOI: 10.1134/S1063774520050211
- Аннотация: The structural features of the phases formed during crystallization of mixed copper and nickelcomplexes with nitrilotris(methylenephosphonic acid) [CuxNi(1 – x){N(CH2PO3)3}]Na4 · nH2O (x = 0–1)and the character of the M ← O(P) coordination bond have been investigated.The copper-dominant phase [(Cu,Ni){N(CH2PO3)3}]Na4 · 13H2O (sp. gr. Pī, Z = 2, a = 10.0096(2)–10.0118(2) Å, b = 11.0311(3)–11.0330(2) Å, c = 12.2893(2)–12.3038(3) Å, α = 84.7180(10)°–84.785(2)°, β = 79.504(2)°–79.544(2)°, γ =66.971(2)°–67.058(2)°) is characterized by the trigonal bipyramidal coordination of the metal atom (oxygenatoms of three different PO3 groups of the ligand molecule lie in the pyramid-base plane, and a nitrogen atom and the oxygen atom of the neighboring ligand molecule occupy opposite vertices). The nickel-containingphase [Ni(H2O){N(CH2PO3)3}]Na4 · 11H2O (sp. gr. C2/c, Z = 4, a = 11.9924(2)–12.05510(10) Å, b =18.6049(3)–18.7152(2) Å, c = 21.0724(4)–21.1266(2) Å, β = 104.096(2)°–104.4960(10)°) is characterized by octahedral coordination of the Ni atom (oxygen atoms of different PO3 groups of the ligand molecule are located at three meridian octahedron vertices, and a nitrogen atom, a water molecule, and the oxygen atom of the neighboring ligand molecule occupy the rest three vertices). The dependence of the interatomic distances and bond angles in the coordination sphere of the metal atom on the Cu : Ni ratio has been studied. Itis shown that the transition from the trigonal bipyramidal coordination to the octahedral coordination is accompanied by a sharp increase in the ionicity of the M ← O(P) coordination bond.
- Добавил в систему: Ломова Наталья Валентиновна