Add like
Add dislike
Add to saved papers

Molecular Routes to Group IV Magnesium and Calcium Nanocrystalline Ceramics.

Inorganic Chemistry 2017 September 19
The effect of alkaline-earth-metal alkoxides on the protonolysis of Cp2 M'Cl2 (M' = Ti, Zr, Hf; Cp = cyclopentadiene) was investigated. This approach enabled the design of compounds with well-defined molecular structures to generate high-purity binary metal oxides. Single-source molecular precursors with structures of [M2 M'2 (μ3 -OEt)2 (μ-OEt)4 (OEt)6 (EtOH)4 ] with M = Mg and M' = Ti (1), Zr (2), and Hf (3), [Ca6 Ti4 (μ6 -O)2 (μ4 -O)2 (μ3 -OEt)12 (OEt)12 (EtOH)6 Cl4 ] (4), and [M2 M'2 (μ4 -O)(μ-OEt)5 (OEt)4 (EtOH)4 Cl]n with M = Ca and M' = Zr (5) and Hf (6) were prepared via elimination of the cyclopentadienyl ring from Cp2 M'Cl2 as CpH in the presence of M(OEt)2 and ethanol (EtOH) as a source of protons. Meanwhile, similar reactions involving the initial substitution of Cl ligands by OEt groups in Cp2 M'Cl2 (M' = Ti, Zr, Hf) resulted in the formation of [M2 M'2 (μ3 -OEt)2 (μ-OEt)4 (OEt)6 (EtOH)4 ] with M = Ca and M' = Ti (7), Zr (8), and Hf (9). The precursors were characterized by elemental analysis, NMR spectroscopy, and single-crystal X-ray structural analysis. Magnesium compounds 1-3 decomposed at 750-850 °C to give MgTiO3 along with small amounts of Mg2 TiO4 , Mg2 Zr5 O12 , or Mg2 Hf5 O12 binary metal oxides. The thermolysis of calcium compounds 4 and 7-9 led to highly pure CaTiO3 , CaZrO3 , or CaHfO3 perovskite-like oxide particles with diameters of 20-30 nm.

Full text links

We have located links that may give you full text access.
Can't access the paper?
Try logging in through your university/institutional subscription. For a smoother one-click institutional access experience, please use our mobile app.

For the best experience, use the Read mobile app

Mobile app image

Get seemless 1-tap access through your institution/university

For the best experience, use the Read mobile app

All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.

By using this service, you agree to our terms of use and privacy policy.

Your Privacy Choices Toggle icon

You can now claim free CME credits for this literature searchClaim now

Get seemless 1-tap access through your institution/university

For the best experience, use the Read mobile app