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Inorganics, Volume 4, Issue 1 (March 2016)

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Editorial

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Open AccessEditorial Acknowledgement to Reviewers of Inorganics in 2015
Inorganics 2016, 4(1), 3; doi:10.3390/inorganics4010003
Received: 26 January 2016 / Accepted: 26 January 2016 / Published: 26 January 2016
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Abstract
The editors of Inorganics would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2015. [...] Full article

Research

Jump to: Editorial

Open AccessArticle Expanding the Chemistry of Actinide Metallocene Bromides. Synthesis, Properties and Molecular Structures of the Tetravalent and Trivalent Uranium Bromide Complexes: (C5Me4R)2UBr2, (C5Me4R)2U(O-2,6-iPr2C6H3)(Br), and [K(THF)][(C5Me4R)2UBr2] (R = Me, Et)
Inorganics 2016, 4(1), 1; doi:10.3390/inorganics4010001
Received: 23 November 2015 / Revised: 9 December 2015 / Accepted: 11 December 2015 / Published: 6 January 2016
Cited by 1 | PDF Full-text (2914 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The organometallic uranium species (C5Me4R)2UBr2 (R = Me, Et) were obtained by treating their chloride analogues (C5Me4R)2UCl2 (R = Me, Et) with Me3SiBr. Treatment of (C5
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The organometallic uranium species (C5Me4R)2UBr2 (R = Me, Et) were obtained by treating their chloride analogues (C5Me4R)2UCl2 (R = Me, Et) with Me3SiBr. Treatment of (C5Me4R)2UCl2 and (C5Me4R)2UBr2 (R = Me, Et) with K(O-2,6-iPr2C6H3) afforded the halide aryloxide mixed-ligand complexes (C5Me4R)2U(O-2,6-iPr2C6H3)(X) (R = Me, Et; X = Cl, Br). Complexes (C5Me4R)2U(O-2,6-iPr2C6H3)(Br) (R = Me, Et) can also be synthesized by treating (C5Me4R)2U(O-2,6-iPr2C6H3)(Cl) (R = Me, Et) with Me3SiBr, respectively. Reduction of (C5Me4R)2UCl2 and (C5Me4R)2UBr2 (R = Me, Et) with KC8 led to isolation of uranium(III) “ate” species [K(THF)][(C5Me5)2UX2] (X = Cl, Br) and [K(THF)0.5][(C5Me4Et)2UX2] (X = Cl, Br), which can be converted to the neutral complexes (C5Me4R)2U[N(SiMe3)2] (R = Me, Et). Analyses by nuclear magnetic resonance spectroscopy, X-ray crystallography, and elemental analysis are also presented. Full article
(This article belongs to the Special Issue Rare Earth and Actinide Complexes) Printed Edition available
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Open AccessArticle Tuning of Hula-Hoop Coordination Geometry in a Dy Dimer
Inorganics 2016, 4(1), 2; doi:10.3390/inorganics4010002
Received: 18 September 2015 / Revised: 22 December 2015 / Accepted: 31 December 2015 / Published: 8 January 2016
Cited by 1 | PDF Full-text (1943 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The reaction of DyCl3 with hydrazone Schiff base ligands and sodium acetate in the presence of triethylamine (Et3N) as base affords two dysprosium dimers: [Dy2(HL1)2(OAc)2(EtOH)(MeOH)] (1) and [Dy2(L2)2(OAc)
[...] Read more.
The reaction of DyCl3 with hydrazone Schiff base ligands and sodium acetate in the presence of triethylamine (Et3N) as base affords two dysprosium dimers: [Dy2(HL1)2(OAc)2(EtOH)(MeOH)] (1) and [Dy2(L2)2(OAc)2(H2O)2]·2MeOH (2). The DyIII ions in complexes 1 and 2 are linked by alkoxo bridges, and display “hula hoop” coordination geometries. Consequently, these two compounds show distinct magnetic properties. Complex 1 behaves as a field-induced single molecule magnet (SMM), while typical SMM behavior was observed for complex 2. In addition, comparison of the structural parameters among similar Dy2 SMMs with hula hoop-like geometry reveals the significant role played by coordination geometry and magnetic interaction in modulating the relaxation dynamics of SMMs. Full article
(This article belongs to the Special Issue Rare Earth and Actinide Complexes) Printed Edition available
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Open AccessArticle A Structural and Spectroscopic Study of the First Uranyl Selenocyanate, [Et4N]3[UO2(NCSe)5]
Inorganics 2016, 4(1), 4; doi:10.3390/inorganics4010004
Received: 30 October 2015 / Revised: 27 January 2016 / Accepted: 4 February 2016 / Published: 16 February 2016
Cited by 4 | PDF Full-text (1847 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The first example of a uranyl selenocyanate compound is reported. The compound [Et4N]3[UO2(NCSe)5] has been synthesized and fully characterized by vibrational and multinuclear (1H, 13C{1H} and 77Se{1H})
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The first example of a uranyl selenocyanate compound is reported. The compound [Et4N]3[UO2(NCSe)5] has been synthesized and fully characterized by vibrational and multinuclear (1H, 13C{1H} and 77Se{1H}) NMR spectroscopy. The photophysical properties have also been recorded and trends in a series of uranyl pseudohalides discussed. Spectroscopic evidence shows that the U–NCSe bonding is principally ionic. An electrochemical study revealed that the reduced uranyl(V) species is unstable to disproportionation and a ligand based oxidation is also observed. The structure of [Et4N]4[UO2(NCSe)5][NCSe] is also presented and Se···H–C hydrogen bonding and Se···Se chalcogen–chalcogen interactions are seen. Full article
(This article belongs to the Special Issue Rare Earth and Actinide Complexes) Printed Edition available
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Open AccessArticle Formation of Micro and Mesoporous Amorphous Silica-Based Materials from Single Source Precursors
Inorganics 2016, 4(1), 5; doi:10.3390/inorganics4010005
Received: 8 January 2016 / Revised: 10 February 2016 / Accepted: 1 March 2016 / Published: 9 March 2016
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Abstract
Polysilazanes functionalized with alkoxy groups were designed and synthesized as single source precursors for fabrication of micro and mesoporous amorphous silica-based materials. The pyrolytic behaviors during the polymer to ceramic conversion were studied by the simultaneous thermogravimetry-mass spectrometry (TG-MS) analysis. The porosity of
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Polysilazanes functionalized with alkoxy groups were designed and synthesized as single source precursors for fabrication of micro and mesoporous amorphous silica-based materials. The pyrolytic behaviors during the polymer to ceramic conversion were studied by the simultaneous thermogravimetry-mass spectrometry (TG-MS) analysis. The porosity of the resulting ceramics was characterized by the N2 adsorption/desorption isotherm measurements. The Fourier transform infrared spectroscopy (FT-IR) and Raman spectroscopic analyses as well as elemental composition analysis were performed on the polymer-derived amorphous silica-based materials, and the role of the alkoxy group as a sacrificial template for the micro and mesopore formations was discussed from a viewpoint to establish novel micro and mesoporous structure controlling technologies through the polymer-derived ceramics (PDCs) route. Full article
(This article belongs to the Special Issue Mesoporous Materials)
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Open AccessArticle A Reliable Method for the Preparation of Multiporous Alumina Monoliths by Ice-Templating
Inorganics 2016, 4(1), 6; doi:10.3390/inorganics4010006
Received: 15 January 2016 / Revised: 24 February 2016 / Accepted: 1 March 2016 / Published: 11 March 2016
Cited by 2 | PDF Full-text (6844 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Alumina supports presenting a bimodal porosity are generally advantageous for the conversion of bulky molecules such as found in biomass, refining, and petrochemistry. However, shaping of such materials, while controlling pores size and orientation, proves to be hard. This problem can be tackled
[...] Read more.
Alumina supports presenting a bimodal porosity are generally advantageous for the conversion of bulky molecules such as found in biomass, refining, and petrochemistry. However, shaping of such materials, while controlling pores size and orientation, proves to be hard. This problem can be tackled by using a simple method involving sol-gel chemistry, surfactant self-assembly, and ice-templating. Herein, a systematic study of the formulation and process parameters’ influence on the final material properties is presented. This protocol results in the repeatable preparation of centimeter-sized alumina monoliths presenting a uni-directional macroporosity and structured mesopores. These monoliths should be of particular interest in high flow rate catalytic applications. Full article
(This article belongs to the Special Issue Mesoporous Materials)
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