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Microwave‐Assisted Hydrothermal Synthesis, Crystal Structure, and Thermal Decomposition of Strontium Citrate Monohydrate Sr 3 (C 6 H 5 O 7 ) 2 ·H 2 O
Author(s) -
Hämmer Matthias,
Wessels Vivien,
Ettlinger Romy,
Höppe Henning. A.
Publication year - 2021
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202000117
Subject(s) - strontium , hydrate , hydrothermal circulation , crystal structure , microcrystalline , crystallography , hydrothermal synthesis , molecule , thermal decomposition , infrared spectroscopy , spectroscopy , raman spectroscopy , materials science , crystal (programming language) , chemistry , analytical chemistry (journal) , mineralogy , geology , physics , programming language , organic chemistry , optics , quantum mechanics , seismology , computer science , chromatography
Microcrystalline strontium citrate monohydrate Sr 3 (C 6 H 5 O 7 ) 2 · H 2 O was prepared by a microwave‐assisted hydrothermal synthesis. Single‐crystal X‐ray structure determination ( P 1 , a = 10.0572(4), b = 10.1506(5), c = 10.8531(5) Å, α = 89.642(2)°, β = 67.156(2)°, γ = 62.367(2)°, 3040 independent reflections, 353 refined parameters, wR 2 = 0.066) revealed three different Sr sites coordinated eight‐, nine and ten‐fold by two crystallographically different citrate molecules with one comprising oriental disorder, but not by the crystal water molecule. These findings are supported by energy dispersive X‐ray spectroscopy, powder XRD, infrared spectroscopy and thermal analysis. Further, the latter three methods are applied to the hitherto only strontium citrate hydrate with known crystal structure Sr 3 (C 6 H 5 O 7 ) 2 · 5H 2 O and both compounds are compared, especially with respect to their possible application as precursors.