Investigation of the fluorolysis of magnesium methoxide

Stefan Wuttke; Anja Lehmann; Gudrun Scholz; Michael Feist; Anton Dimitrov; Sergey I. Troyanov; Erhard Kemnitz

doi:10.1039/b901030k

Investigation of the fluorolysis of magnesium methoxide

Stefan Wuttke, Anja Lehmann, Gudrun Scholz, Michael Feist, Anton Dimitrov, Sergey I. Troyanov, Erhard Kemnitz

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The structures of magnesium methoxide and magnesium methoxide fluoride obtained via the reaction of Mg(OCH₃)₂ with HF were investigated by single-crystal structure analysis and multinuclear solid-state NMR (¹³C and ¹⁹F). The fluorolysis of magnesium methoxide transforms the cubane structure units in hexanuclear dicubane units containing μ₄-fluorine atoms. The resulting Mg₆F ₂(OCH₃)₁₀(CH₃OH)₁₄ compound crystallizes in two different crystalline modifications. Moreover by slow thermal decomposition of the compound Mg₆F₂(OCH ₃)₁₀(CH₃OH)₁₄, it loses two outer CH₃OH molecules and leaves crystal structure Mg₆F ₂(OCH₃)₁₀(CH₃OH)₁₂. The thermal behavior of Mg(OCH₃)₂(CH₃OH) _3.55 and Mg₆F₂(OCH₃) ₁₀(CH₃OH)₁₄ was investigated by DTA and XRD. Both compounds lose the solvated methanol completely by heating above 150 °C and form MgO above 600 °C as well as amorphous MgF₂ in the case of magnesium methoxide fluoride.

Original language	English
Pages (from-to)	4729-4734
Number of pages	6
Journal	Dalton Transactions
Issue number	24
DOIs	https://doi.org/10.1039/b901030k
Publication status	Published - 2009
Externally published	Yes

ASJC Scopus subject areas

Inorganic Chemistry

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title = "Investigation of the fluorolysis of magnesium methoxide",

abstract = "The structures of magnesium methoxide and magnesium methoxide fluoride obtained via the reaction of Mg(OCH3)2 with HF were investigated by single-crystal structure analysis and multinuclear solid-state NMR (13C and 19F). The fluorolysis of magnesium methoxide transforms the cubane structure units in hexanuclear dicubane units containing μ4-fluorine atoms. The resulting Mg6F 2(OCH3)10(CH3OH)14 compound crystallizes in two different crystalline modifications. Moreover by slow thermal decomposition of the compound Mg6F2(OCH 3)10(CH3OH)14, it loses two outer CH3OH molecules and leaves crystal structure Mg6F 2(OCH3)10(CH3OH)12. The thermal behavior of Mg(OCH3)2(CH3OH) 3.55 and Mg6F2(OCH3) 10(CH3OH)14 was investigated by DTA and XRD. Both compounds lose the solvated methanol completely by heating above 150 °C and form MgO above 600 °C as well as amorphous MgF2 in the case of magnesium methoxide fluoride.",

author = "Stefan Wuttke and Anja Lehmann and Gudrun Scholz and Michael Feist and Anton Dimitrov and Troyanov, {Sergey I.} and Erhard Kemnitz",

year = "2009",

doi = "10.1039/b901030k",

language = "English",

pages = "4729--4734",

journal = "Dalton Transactions",

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publisher = "Royal Society of Chemistry",

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T1 - Investigation of the fluorolysis of magnesium methoxide

AU - Wuttke, Stefan

AU - Lehmann, Anja

AU - Scholz, Gudrun

AU - Feist, Michael

AU - Dimitrov, Anton

AU - Troyanov, Sergey I.

AU - Kemnitz, Erhard

PY - 2009

Y1 - 2009

N2 - The structures of magnesium methoxide and magnesium methoxide fluoride obtained via the reaction of Mg(OCH3)2 with HF were investigated by single-crystal structure analysis and multinuclear solid-state NMR (13C and 19F). The fluorolysis of magnesium methoxide transforms the cubane structure units in hexanuclear dicubane units containing μ4-fluorine atoms. The resulting Mg6F 2(OCH3)10(CH3OH)14 compound crystallizes in two different crystalline modifications. Moreover by slow thermal decomposition of the compound Mg6F2(OCH 3)10(CH3OH)14, it loses two outer CH3OH molecules and leaves crystal structure Mg6F 2(OCH3)10(CH3OH)12. The thermal behavior of Mg(OCH3)2(CH3OH) 3.55 and Mg6F2(OCH3) 10(CH3OH)14 was investigated by DTA and XRD. Both compounds lose the solvated methanol completely by heating above 150 °C and form MgO above 600 °C as well as amorphous MgF2 in the case of magnesium methoxide fluoride.

AB - The structures of magnesium methoxide and magnesium methoxide fluoride obtained via the reaction of Mg(OCH3)2 with HF were investigated by single-crystal structure analysis and multinuclear solid-state NMR (13C and 19F). The fluorolysis of magnesium methoxide transforms the cubane structure units in hexanuclear dicubane units containing μ4-fluorine atoms. The resulting Mg6F 2(OCH3)10(CH3OH)14 compound crystallizes in two different crystalline modifications. Moreover by slow thermal decomposition of the compound Mg6F2(OCH 3)10(CH3OH)14, it loses two outer CH3OH molecules and leaves crystal structure Mg6F 2(OCH3)10(CH3OH)12. The thermal behavior of Mg(OCH3)2(CH3OH) 3.55 and Mg6F2(OCH3) 10(CH3OH)14 was investigated by DTA and XRD. Both compounds lose the solvated methanol completely by heating above 150 °C and form MgO above 600 °C as well as amorphous MgF2 in the case of magnesium methoxide fluoride.

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IS - 24

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Investigation of the fluorolysis of magnesium methoxide

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