1
|
Hayashi T, Kikuchi M, Murase N, Matsuno T, Sugimura N, Kuroda K, Shimojima A. Hexagonal Prismatic Siloxanes Functionalized with Organosilyl Groups as Building Blocks of Nanoporous Materials. Chemistry 2024; 30:e202304080. [PMID: 38200698 DOI: 10.1002/chem.202304080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 12/28/2023] [Accepted: 01/10/2024] [Indexed: 01/12/2024]
Abstract
Utilization of well-defined siloxane molecules allows for the construction of functional siloxane-based nanoporous materials based on the molecular design. Herein, a novel class of siloxane-based porous materials is synthesized via cross-linking of dimethylsilyl- and dimethylvinylsilyl-functionalized cage siloxanes with double-6-ring (D6R) geometry. Compared with the conventional double-4-ring cage siloxane, this study highlights the characteristics of D6R siloxanes as building blocks, demonstrating their high surface area and chemical stability. Furthermore, density functional theory calculations show their unique cation encapsulation ability.
Collapse
Affiliation(s)
- Taiki Hayashi
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Miharu Kikuchi
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Nanako Murase
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Takamichi Matsuno
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan
- Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Natsuhiko Sugimura
- Materials Characterization Central Laboratory, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051, Japan
- Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo, 169-8555, Japan
| |
Collapse
|
2
|
Ćeranić K, Milovanović B, Petković M. Density functional theory study of crown ether-magnesium complexes: from a solvated ion to an ion trap. Phys Chem Chem Phys 2023; 25:32656-32665. [PMID: 38010878 DOI: 10.1039/d3cp03991a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Metal ion detection rests on host-guest recognition. We propose a theoretical protocol for designing an optimal trap for a desired metal cation. A host for magnesium ions was sought for among derivatives of crown ethers 12-crown-4, 15-crown-5, and 18-crown-6. Mg-crown complexes and their hydrated counterparts with water molecules bound to the cation were optimized using density functional theory. Based on specific geometric criteria, Interacting quantum atoms analysis and density functional theory-based molecular dynamics of Mg-crown complexes immersed in water, crown ethers for optimal accommodation of Mg2+ in aqueous solution were identified. Selectivity of the chosen crowns towards Na+, K+, and Ca2+ ions is addressed.
Collapse
Affiliation(s)
- Katarina Ćeranić
- Innovative Centre of the Faculty of Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia
- University of Belgrade - Faculty of Physical Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia.
| | - Branislav Milovanović
- University of Belgrade - Faculty of Physical Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia.
| | - Milena Petković
- University of Belgrade - Faculty of Physical Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia.
| |
Collapse
|
3
|
Buchner MR, Dankert F, Berthold C, Müller M, von Hänisch C. Beryllium-Mediated Halide and Aryl Transfer onto Silicon. Chemistry 2023; 29:e202302652. [PMID: 37590553 DOI: 10.1002/chem.202302652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 08/16/2023] [Accepted: 08/17/2023] [Indexed: 08/19/2023]
Abstract
The reactivity of hexamethylcyclotrisiloxane (D3 ) towards BeCl2 , BeBr2 , BeI2 and [Be3 Ph6 ]3 was investigated. While BeCl2 only showed unselective reactivity, BeBr2 , BeI2 and [Be3 Ph6 ] cleanly react to the trinuclear complexes [Be3 Br2 (OSiMe2 Br)4 ], [Be3 I2 (OSiMe2 I)4 ] and [Be3 Ph2 (OSiMe2 Ph)4 ]. These unprecedented bromide, iodide and phenyl transfer reactions from a group II metal onto silicon offer a versatile access to previously unknown diorgano bromo and iodo silanolates.
Collapse
Affiliation(s)
- Magnus R Buchner
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032, Marburg, Germany
| | - Fabian Dankert
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032, Marburg, Germany
- Present address: Universität Bern, Department of Chemistry and Biochemistry, Freiestrasse 3, 3012, Bern, Switzerland
| | - Chantsalmaa Berthold
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032, Marburg, Germany
| | - Matthias Müller
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032, Marburg, Germany
| | - Carsten von Hänisch
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032, Marburg, Germany
| |
Collapse
|
4
|
Alvarez S. From polygons to polyhedra through intermediate structures. A shape measures study of six-atom inorganic rings and clusters. Dalton Trans 2021; 50:17101-17119. [PMID: 34779451 DOI: 10.1039/d1dt03039f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Among the wealth of well-established molecular structures, inorganic rings and clusters present an overwhelming variety of geometries that chemists try to describe with a limited assortment of regular polygons and polyhedra. In the case of six-atom structures we usually employ the hexagon, the pentagonal pyramid, the trigonal prism and the octahedron. More often than not, however, real world structures deviate from those ideal geometries, and we try to cope with non-ideality by adding adjectives such as distorted, twisted, puckered or flattened, additionally nuanced by adverbs such as slightly, significantly or severely. This contribution presents a systematic structural perspective of six-atom groups in molecules by means of a continuous shape measures (CShM) analysis. The shape of a group of N points is defined by all the sets of 3 N Cartesian coordinates that can be generated by rigid translation, rotation, or isotropic scale change. Among all possible arrangements of N points in space, we select as reference shapes the corresponding regular N-vertex polygons and polyhedra, together with univocally defined combinations thereof (e.g., two coplanar or perpendicular edge-sharing squares). The present CShM study allows us to classify most of the structures not only by their closeness to a particular regular shape, but also by quantifying their position along minimal distortion interconversion pathways between two regular shapes.
Collapse
Affiliation(s)
- Santiago Alvarez
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica and Institut de Química Teòrica i Computacional, Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain.
| |
Collapse
|
5
|
Dankert F, Hänisch C. Siloxane Coordination Revisited: Si−O Bond Character, Reactivity and Magnificent Molecular Shapes. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100275] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fabian Dankert
- Leibniz-Institut für Katalyse e. V. (LIKAT Rostock) Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Carsten Hänisch
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften (WZMW) Philipps-Universität Marburg Hans-Meerwein-Straße 4 35032 Marburg Germany
| |
Collapse
|
6
|
Dankert F, Richter R, Weigend F, Xie X, Balmer M, Hänisch C. Aufbau anorganischer Kronenether durch s‐Block‐Metall‐templatgesteuerte Si‐O‐Bindungsaktivierung. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Fabian Dankert
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35032 Marburg Deutschland
| | - Roman‐Malte Richter
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35032 Marburg Deutschland
| | - Florian Weigend
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35032 Marburg Deutschland
| | - Xiulan Xie
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35032 Marburg Deutschland
| | - Markus Balmer
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35032 Marburg Deutschland
| | - Carsten Hänisch
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35032 Marburg Deutschland
| |
Collapse
|
7
|
Dankert F, Richter R, Weigend F, Xie X, Balmer M, von Hänisch C. Construction of Inorganic Crown Ethers by s-Block-Metal-Templated Si-O Bond Activation. Angew Chem Int Ed Engl 2021; 60:10393-10401. [PMID: 33591587 PMCID: PMC8252370 DOI: 10.1002/anie.202014822] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/01/2021] [Indexed: 11/07/2022]
Abstract
We herein report the synthesis, structures, coordination ability, and mechanism of formation of silicon analogs of crown ethers. An oligomerization of 2 D2 (I) (2 Dn ,=(Me4 Si2 O)n ) was achieved by the reaction with GaI3 and MIx (M=Li, Na, Mg, Ca, Sr). In these reactions the metal cations serve as template and the anions (I- /[GaI4 ]- ) are required as nucleophiles. In case of MIx =LiI, [Li(2 D3 )GaI4 ] (1) is formed. In case of MIx =NaI, MgI2 , CaI2 , and SrI2 the compounds [M(2 D4 )(GaI4 )x ] (M=Mg2+ (3), Ca2+ (4), Sr2+ (5) are obtained. Furthermore the proton complex [H(2 D3 )][Ga2 I7 ] (6) was isolated and structurally characterized. All complexes were characterized by means of multinuclear NMR spectroscopy, DOSY experiments and, except for compound 3, also by single crystal X-ray diffraction. Quantum chemical calculations were carried out to compare the affinity of M+ to 2 Dn and other ligands and to shed light on the formation of larger rings from smaller ones.
Collapse
Affiliation(s)
- Fabian Dankert
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse 435032MarburgGermany
| | - Roman‐Malte Richter
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse 435032MarburgGermany
| | - Florian Weigend
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse 435032MarburgGermany
| | - Xiulan Xie
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse 435032MarburgGermany
| | - Markus Balmer
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse 435032MarburgGermany
| | - Carsten von Hänisch
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse 435032MarburgGermany
| |
Collapse
|
8
|
Malinowski PJ, Jaroń T, Domańska M, Slattery JM, Schmitt M, Krossing I. Building blocks for the chemistry of perfluorinated alkoxyaluminates [Al{OC(CF 3) 3} 4] -: simplified preparation and characterization of Li +-Cs +, Ag +, NH 4+, N 2H 5+ and N 2H 7+ salts. Dalton Trans 2020; 49:7766-7773. [PMID: 32329763 DOI: 10.1039/d0dt00592d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Advanced weakly coordinating anions (WCAs) significantly facilitate synthesis of various exotic chemical compounds and novel, potentially useful materials. One of such anions - [Al{OC(CF3)3}4]-, denoted [Al(ORF)4]-, appears particularly convenient, as it can be easily prepared from the commercially available alanates and HOC(CF3)3. Here we present a thorough characterization of a series of solvent-free M[Al(ORF)4] salts, M = Li-Cs, Ag, NH4, N2H5 and N2H7, and related compounds of monovalent cations, which are crucial starting materials for further work with these species. Notably, the corresponding synthetic protocols are updated by an improved method for fast, facile and easily scalable synthesis of Li[Al(ORF)4], which remains the most useful primary source of the anion. The physico-chemical properties of these salts including crystal structures, thermal stability by TG/DSC, vibrational spectra as well as solubility are discussed in a systematic fashion.
Collapse
|
9
|
Dankert F, Erlemeier L, Ritter C, von Hänisch C. On the molecular architectures of siloxane coordination compounds: (re-)investigating the coordination of the cyclodimethylsiloxanes Dn(n= 5–8) towards alkali metal ions. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00109k] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Cyclodimethylsiloxanes have been used as complex ligands and silyl-ether bonding towards various cations is explored stepwise. Compounds with unprecedented coordination modes as well as novel molecular architectures are obtained and characterized.
Collapse
Affiliation(s)
- Fabian Dankert
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- Marburg
- Germany
| | - Lukas Erlemeier
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- Marburg
- Germany
| | - Christian Ritter
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- Marburg
- Germany
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- Marburg
- Germany
| |
Collapse
|
10
|
Dankert F, Donsbach C, Rienmüller J, Richter RM, von Hänisch C. Alkaline Earth Metal Template (Cross-)Coupling Reactions with Hybrid Disila-Crown Ether Analogues. Chemistry 2019; 25:15934-15943. [PMID: 31596978 PMCID: PMC6916185 DOI: 10.1002/chem.201904209] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Indexed: 11/12/2022]
Abstract
Alkaline earth metal iodides were used as templates for the synthesis of novel silicon-based ligands. Siloxane moieties were (cross-)coupled and ion-specific, silicon-rich crown ether analogues were obtained. The reaction of 1,2,7,8-tetrasila[12]crown-4 (I) and 1,2-disila[9]crown-3 (II) with MgI2 yielded exclusively [Mg(1,2,7,8-tetrasila[12]crown-4)I2 ] (1). The larger Ca2+ ion was then employed for cross-coupling of I and II and yielded the complex [Ca(1,2,7,8-tetrasila[15]crown-5)I2 ] (2). Cross-coupling of I and 1,2,4,5-tetrasila[9]crown-3 (III) with SrI2 enables the synthesis of the silicon-dominant 1,2,4,5,10,11-hexasila[15]crown-5 ether complex of SrI2 (3). Further, the compounds [Sr(1,2,10,11-tetrasila[18]crown-6)I2 ] (4), [Sr(1,2,13,14-tetrasila[24]crown-8)I2 ] (5), and [Sr(1,2,13,14-tetrasila-dibenzo[24]crown-8)I2 ] (6) were obtained by coupling I, 1,2-disila[12]crown-4 (IV) or 1,2-disila-benzo[12]crown-4 (V), respectively. Using various anions, the (cross-)coupled ligands were also observed in an X-ray structure within the mentioned complexes. These template-assisted (cross-)couplings of various ligands are the first of their kind and a novel method to obtain macrocycles and/or their metal complexes to be established. Further, the Si-O bond activations presented herein might be of importance for silane or even organic functionalization.
Collapse
Affiliation(s)
- Fabian Dankert
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität Marburg35032MarburgGermany
| | - Carsten Donsbach
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität Marburg35032MarburgGermany
| | - Julia Rienmüller
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität Marburg35032MarburgGermany
| | - Roman M. Richter
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität Marburg35032MarburgGermany
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität Marburg35032MarburgGermany
| |
Collapse
|
11
|
Dankert F, Weigend F, von Hänisch C. Not Non-Coordinating at All: Coordination Compounds of the Cyclodimethylsiloxanes D n (D = Me 2SiO; n = 6, 7) and Group 2 Metal Cations. Inorg Chem 2019; 58:15417-15422. [PMID: 31661251 DOI: 10.1021/acs.inorgchem.9b02519] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We present the coordination chemistry of the cyclodimethylsiloxanes D6 and D7 toward alkaline earth metal salts. The coordination chemistry of these macrocycles toward alkaline earth metals has been unprecedented to date, and we could show that these ligands coordinate better than previously thought. Direct reaction of alkaline earth metal salts with these ligands yields stable complexes even with a relatively strongly coordinating iodide anion. A handful of counterintuitive coordination compounds could be characterized by single-crystal X-ray diffraction analysis. Quantum chemical calculations of suited Born-Haber cycles showed that these complexes are indeed stable, for Mg2+ and Ca2+ even with iodide employed as the anion and for Sr2+ and Ba2+ in the presence of GaI3.
Collapse
Affiliation(s)
- Fabian Dankert
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW) , Philipps-Universität Marburg , 35032 Marburg , Germany
| | - Florian Weigend
- Institut für Nanotechnologie , Karlsruher Institut für Technologie , Hermann-von-Helmholtz-Platz 1 , 76344 Leopoldshafen-Eggenstein , Germany
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW) , Philipps-Universität Marburg , 35032 Marburg , Germany
| |
Collapse
|
12
|
|
13
|
Dankert F, von Hänisch C. Insights into the Coordination Ability of Siloxanes Employing Partially Silicon Based Crown Ethers: A Comparative Analysis of s-Block Metal Complexes. Inorg Chem 2019; 58:3518-3526. [DOI: 10.1021/acs.inorgchem.9b00086] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Fabian Dankert
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| |
Collapse
|
14
|
Kögel JF, Timoshkin AY, Schröder A, Lork E, Beckmann J. Al(OCArF3) 3 - a thermally stable Lewis superacid. Chem Sci 2018; 9:8178-8183. [PMID: 30568768 PMCID: PMC6256356 DOI: 10.1039/c8sc02981d] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 09/25/2018] [Indexed: 11/21/2022] Open
Abstract
The adduct free Lewis superacid Al(OCArF3)3 was obtained by the reaction of ArF3COH with AlEt3 and fully characterized (ArF = C6F5). It comprises a high thermal stability up to 180 °C and a distinct reactivity towards Lewis bases, as exemplified by the isolation of the neutral adducts Al(OCArF3)·D (D = MeCN, THF, Et2O, pyridine, OPEt3), the fluoride complexes [Q][FAl(OCArF)3] (Q+ = Cs+, Ag+, Tl+, [S(NMe2)3]+, [Ph3C]+, Li+, [NBu4]+, [FeCp2]+) and the chloride complex [Ph3C][ClAl(OCArF)3].
Collapse
Affiliation(s)
- Julius F Kögel
- FB Biologie/Chemie , Universität Bremen , Leobener Str. 7 , 28359 Bremen , Germany .
| | - Alexey Y Timoshkin
- Institute of Chemistry , St. Petersburg State University , Universitetskaya emb. 7/9 , 199034 St. Petersburg , Russia .
| | - Artem Schröder
- FB Biologie/Chemie , Universität Bremen , Leobener Str. 7 , 28359 Bremen , Germany .
| | - Enno Lork
- FB Biologie/Chemie , Universität Bremen , Leobener Str. 7 , 28359 Bremen , Germany .
| | - Jens Beckmann
- FB Biologie/Chemie , Universität Bremen , Leobener Str. 7 , 28359 Bremen , Germany .
| |
Collapse
|
15
|
Fugel M, Hesse MF, Pal R, Beckmann J, Jayatilaka D, Turner MJ, Karton A, Bultinck P, Chandler GS, Grabowsky S. Covalency and Ionicity Do Not Oppose Each Other-Relationship Between Si-O Bond Character and Basicity of Siloxanes. Chemistry 2018; 24:15275-15286. [PMID: 29999553 DOI: 10.1002/chem.201802197] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/11/2018] [Indexed: 11/07/2022]
Abstract
Covalency and ionicity are orthogonal rather than antipodal concepts. We demonstrate for the case of siloxane systems [R3 Si-(O-SiR2 )n -O-SiR3 ] that both covalency and ionicity of the Si-O bonds impact on the basicity of the Si-O-Si linkage. The relationship between the siloxane basicity and the Si-O bond character has been under debate since previous studies have presented conflicting explanations. It has been shown with natural bond orbital methods that increased hyperconjugative interactions of LP(O)→σ*(Si-R) type, that is, increased orbital overlap and hence covalency, are responsible for the low siloxane basicity at large Si-O-Si angles. On the other hand, increased ionicity towards larger Si-O-Si angles has been revealed with real-space bonding indicators. To resolve this ostensible contradiction, we perform a complementary bonding analysis, which combines orbital-space, real-space, and bond-index considerations. We analyze the isolated disiloxane molecule H3 SiOSiH3 with varying Si-O-Si angles, and n-membered cyclic siloxane systems Si2 H4 O(CH2 )n-3 . All methods from quite different realms show that both covalent and ionic interactions increase simultaneously towards larger Si-O-Si angles. In addition, we present highly accurate absolute hydrogen-bond interaction energies of the investigated siloxane molecules with water and silanol as donors. It is found that intermolecular hydrogen bonding is significant at small Si-O-Si angles and weakens as the Si-O-Si angle increases until no stable hydrogen-bond complexes are obtained beyond φSiOSi =168°, angles typically displayed by minerals or polymers. The maximum hydrogen-bond interaction energy, which is obtained at an angle of 105°, is 11.05 kJ mol-1 for the siloxane-water complex and 18.40 kJ mol-1 for the siloxane-silanol complex.
Collapse
Affiliation(s)
- Malte Fugel
- University of Bremen, Department 2-Chemistry/Biology, Institute of Inorganic Chemistry and Crystallography, Leobener Str. 3 and 7, 28359, Bremen, Germany
| | - Maxie F Hesse
- University of Bremen, Department 2-Chemistry/Biology, Institute of Inorganic Chemistry and Crystallography, Leobener Str. 3 and 7, 28359, Bremen, Germany
| | - Rumpa Pal
- University of Bremen, Department 2-Chemistry/Biology, Institute of Inorganic Chemistry and Crystallography, Leobener Str. 3 and 7, 28359, Bremen, Germany
| | - Jens Beckmann
- University of Bremen, Department 2-Chemistry/Biology, Institute of Inorganic Chemistry and Crystallography, Leobener Str. 3 and 7, 28359, Bremen, Germany
| | - Dylan Jayatilaka
- University of Western Australia, School of Molecular Sciences, 35 Stirling Highway, Perth, WA, 6009, Australia
| | - Michael J Turner
- University of Western Australia, School of Molecular Sciences, 35 Stirling Highway, Perth, WA, 6009, Australia
| | - Amir Karton
- University of Western Australia, School of Molecular Sciences, 35 Stirling Highway, Perth, WA, 6009, Australia
| | - Patrick Bultinck
- Ghent University, Department of Chemistry, Krijgslaan 281 (S3), 9000, Gent, Belgium
| | - Graham S Chandler
- University of Western Australia, School of Molecular Sciences, 35 Stirling Highway, Perth, WA, 6009, Australia
| | - Simon Grabowsky
- University of Bremen, Department 2-Chemistry/Biology, Institute of Inorganic Chemistry and Crystallography, Leobener Str. 3 and 7, 28359, Bremen, Germany
| |
Collapse
|
16
|
Martens A, Weis P, Krummer MC, Kreuzer M, Meierhöfer A, Meier SC, Bohnenberger J, Scherer H, Riddlestone I, Krossing I. Facile and systematic access to the least-coordinating WCA [(R FO) 3Al-F-Al(OR F) 3] - and its more Lewis-basic brother [F-Al(OR F) 3] - (R F = C(CF 3) 3). Chem Sci 2018; 9:7058-7068. [PMID: 30310626 PMCID: PMC6137444 DOI: 10.1039/c8sc02591f] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 07/31/2018] [Indexed: 11/23/2022] Open
Abstract
By reaction of the Lewis acid Me3Si-F-Al(ORF)3 with a series of [PF6]- salts, gaseous PF5 and Me3Si-F are liberated and salts of the anion [F-Al(ORF)3]- ([f-al]-; RF = C(CF3)3) can be obtained. By addition of another equivalent of Me3Si-F-Al(ORF)3 to [f-al]-, gaseous Me3Si-F is released and salts of the least coordinating anion [(RFO)3Al-F-Al(ORF)3]- ([al-f-al]-) are formed. Both procedures work for a series of synthetically useful cations including Ag+, [NO]+, [Ph3C]+ and in very clean reactions with 5 g batch sizes giving excellent yields typically exceeding 90%. In addition, the synthesis of Me3Si-F-Al(ORF)3 has been optimized and scaled up to 85 g batches in an one-pot procedure. These anions could previously only be obtained by difficult to control decomposition reactions of [Al(ORF)4]- or by halide abstraction reactions with Me3Si-F-Al(ORF)3, generating relatively large countercations that are unsuited for further use as universal starting materials. Especially [al-f-al]- is of interest for the stabilization of reactive cations, since it is even weaker coordinating than [Al(ORF)4]- and more stable against strong electrophiles. This bridged anion can be seen as an adduct of [f-al]- and Al(ORF)3. Thus, it is similarly Lewis acidic as BF3 and eventually reacts with nucleophiles (Nu) from the reaction environment to yield Nu-Al(ORF)3 and [f-al]-. This prevents working with [al-f-al]- salts in ethereal or other donor solvents. By contrast, the [f-al]- anion is no longer Lewis acidic and may therefore be used for reactions involving stronger nucleophiles than the [al-f-al]- anion can withstand. Subsequently it may be transformed into the [al-f-al]- salt by simple addition of one equivalent of Me3Si-F-Al(ORF)3.
Collapse
Affiliation(s)
- Arthur Martens
- Institut für Anorganische und Analytische Chemie , Freiburger Materialforschungszentrum (FMF) , Universität Freiburg , Albertstr. 21 , 79104 Freiburg , Germany .
| | - Philippe Weis
- Institut für Anorganische und Analytische Chemie , Freiburger Materialforschungszentrum (FMF) , Universität Freiburg , Albertstr. 21 , 79104 Freiburg , Germany .
| | - Michael Christian Krummer
- Institut für Anorganische und Analytische Chemie , Freiburger Materialforschungszentrum (FMF) , Universität Freiburg , Albertstr. 21 , 79104 Freiburg , Germany .
| | - Marvin Kreuzer
- Institut für Anorganische und Analytische Chemie , Freiburger Materialforschungszentrum (FMF) , Universität Freiburg , Albertstr. 21 , 79104 Freiburg , Germany .
| | - Andreas Meierhöfer
- Institut für Anorganische und Analytische Chemie , Freiburger Materialforschungszentrum (FMF) , Universität Freiburg , Albertstr. 21 , 79104 Freiburg , Germany .
| | - Stefan C Meier
- Institut für Anorganische und Analytische Chemie , Freiburger Materialforschungszentrum (FMF) , Universität Freiburg , Albertstr. 21 , 79104 Freiburg , Germany .
| | - Jan Bohnenberger
- Institut für Anorganische und Analytische Chemie , Freiburger Materialforschungszentrum (FMF) , Universität Freiburg , Albertstr. 21 , 79104 Freiburg , Germany .
| | - Harald Scherer
- Institut für Anorganische und Analytische Chemie , Freiburger Materialforschungszentrum (FMF) , Universität Freiburg , Albertstr. 21 , 79104 Freiburg , Germany .
| | - Ian Riddlestone
- Institut für Anorganische und Analytische Chemie , Freiburger Materialforschungszentrum (FMF) , Universität Freiburg , Albertstr. 21 , 79104 Freiburg , Germany .
| | - Ingo Krossing
- Institut für Anorganische und Analytische Chemie , Freiburger Materialforschungszentrum (FMF) , Universität Freiburg , Albertstr. 21 , 79104 Freiburg , Germany .
| |
Collapse
|
17
|
Yoshikawa M, Shiba H, Wada H, Shimojima A, Kuroda K. Polymerization of Cyclododecasiloxanes with Si–H and Si–OEt Side Groups by the Piers-Rubinsztajn Reaction. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170410] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Masashi Yoshikawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Hiroya Shiba
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Hiroaki Wada
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
| |
Collapse
|
18
|
Hybrid Disila-Crown Ethers as Hosts for Ammonium Cations: The O–Si–Si–O Linkage as an Acceptor for Hydrogen Bonding. INORGANICS 2018. [DOI: 10.3390/inorganics6010015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Host-guest chemistry was performed with disilane-bearing crown ethers and the ammonium cation. Equimolar reactions of 1,2-disila[18]crown-6 (1) or 1,2-disila-benzo[18]crown-6 (2) and NH4PF6 in dichloromethane yielded the respective compounds [NH4(1,2-disila[18]crown-6)]PF6 (3) and [NH4(1,2-disila-benzo[18]crown-6)]PF6 (4). According to X-ray crystallographic, NMR, and IR experiments, the uncommon hydrogen bonding motif O(Si)∙∙∙H could be observed and the use of cooperative effects of ethylene and disilane bridges as an effective way to incorporate guest molecules was illustrated.
Collapse
|
19
|
Pahl J, Elsen H, Friedrich A, Harder S. Unsupported metal silyl ether coordination. Chem Commun (Camb) 2018; 54:7846-7849. [DOI: 10.1039/c8cc04517h] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Silyl ethers surrender to magnesium: the very weak Lewis base hexamethyldisiloxane is forced to ligate a “naked” cationic Mg species. Agostic interactions and van der Waals attraction contribute to stability.
Collapse
Affiliation(s)
- Jürgen Pahl
- Inorganic and Organometallic Chemistry
- University Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Holger Elsen
- Inorganic and Organometallic Chemistry
- University Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Alexander Friedrich
- Inorganic and Organometallic Chemistry
- University Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Sjoerd Harder
- Inorganic and Organometallic Chemistry
- University Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| |
Collapse
|
20
|
Buchner MR, Müller M, Dankert F, Reuter K, von Hänisch C. The coordination behaviour and reactivity of partially silicon based crown ethers towards beryllium chloride. Dalton Trans 2018; 47:16393-16397. [DOI: 10.1039/c8dt03963a] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The reaction of partially silicon based crown ethers with BeCl2 yields eight-membered Be–O-heterocycles, which are annulated by two six-membered Be–O-cycles.
Collapse
Affiliation(s)
- Magnus R. Buchner
- Anorganische Chemie
- Nachwuchsgruppe Berylliumchemie
- Fachbereich Chemie
- Philipps-Universität Marburg
- 35032 Marburg
| | - Matthias Müller
- Anorganische Chemie
- Nachwuchsgruppe Berylliumchemie
- Fachbereich Chemie
- Philipps-Universität Marburg
- 35032 Marburg
| | - Fabian Dankert
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- 35032 Marburg
- Germany
| | - Kirsten Reuter
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- 35032 Marburg
- Germany
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- 35032 Marburg
- Germany
| |
Collapse
|
21
|
Dankert F, Donsbach C, Mais CN, Reuter K, von Hänisch C. Alkali and Alkaline Earth Metal Derivatives of Disila-Bridged Podands: Coordination Chemistry and Structural Diversity. Inorg Chem 2017; 57:351-359. [DOI: 10.1021/acs.inorgchem.7b02590] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Fabian Dankert
- Fachbereich Chemie and Wissenschaftliches
Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Carsten Donsbach
- Fachbereich Chemie and Wissenschaftliches
Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Christopher-Nils Mais
- Fachbereich Chemie and Wissenschaftliches
Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Kirsten Reuter
- Fachbereich Chemie and Wissenschaftliches
Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches
Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany
| |
Collapse
|
22
|
Reuter K, Rudel SS, Buchner MR, Kraus F, von Hänisch C. Crown Ether Complexes of Alkali‐Metal Chlorides from SO
2. Chemistry 2017; 23:9607-9617. [DOI: 10.1002/chem.201701174] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Kirsten Reuter
- Anorganische Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität Marburg Hans-Meerwein Straße 4 35032 Marburg Germany
| | - Stefan S. Rudel
- Anorganische Chemie, Fluorchemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität Marburg Hans-Meerwein Straße 4 35032 Marburg Germany
| | - Magnus R. Buchner
- Anorganische Chemie, Nachwuchsgruppe BerylliumchemiePhilipps-Universität Marburg Hans-Meerwein Straße 4 35032 Marburg Germany
| | - Florian Kraus
- Anorganische Chemie, Fluorchemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität Marburg Hans-Meerwein Straße 4 35032 Marburg Germany
| | - Carsten von Hänisch
- Anorganische Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität Marburg Hans-Meerwein Straße 4 35032 Marburg Germany
| |
Collapse
|
23
|
Reuter K, Maas RGM, Reuter A, Kilgenstein F, Asfaha Y, von Hänisch C. Synthesis of heteroatomic bridged paracyclophanes. Dalton Trans 2017; 46:4530-4541. [PMID: 28272641 DOI: 10.1039/c7dt00321h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heteroatomic bridged paracyclophanes were obtained by two independent synthetic approaches. The required precursors consist of para R2SiCl (R = Me, iPr) substituted aromatic rings (2 and 4). They were subsequently functionalised by using NH3, [LiPH2(dme)] or LiAl(PH2)4. In the case of the Me-substituted species 2, the reaction with NH3 directly yielded the Si2N bridged paracyclophane 5. The Si2P incorporated derivative 10 was obtained by lithiation of p-C6H4(SiiPr2PH2)2 (9) and subsequent salt metathesis with the chlorosilane 4. The second approach involves the use of GaEt3 in the formation of four membered (GaPn)2 cycles (Pn = N, P). p-[C6H4{SiiPr2N(H)GaEt2}2]2 (11) and p-[C6H4{SiiPr2P(H)GaEt2}2]2 (12) represent the first examples of stable (GaPn)2cis isomers as the trans species did not appear in solution. Although 11 and 12 show a similar coordination pattern, they differ in the orientation of the aromatic systems: in the solid structure, 11 adopts a - for paracyclophanes so far unique - T-shape conformation of the phenyl rings, while 12 shows the predominant coplanar orientation. All cyclophanes were characterized by X-ray diffraction, elemental analysis, NMR and IR spectroscopy.
Collapse
Affiliation(s)
- K Reuter
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany.
| | - R G M Maas
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany.
| | - A Reuter
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany.
| | - F Kilgenstein
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany.
| | - Y Asfaha
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany.
| | - C von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany.
| |
Collapse
|
24
|
|
25
|
Dankert F, Reuter K, Donsbach C, von Hänisch C. A structural study of alkaline earth metal complexes with hybrid disila-crown ethers. Dalton Trans 2017; 46:8727-8735. [DOI: 10.1039/c6dt04018g] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of disila-crown ether complexes have been characterized by single crystal X-ray diffraction. The complex stability of different systems were studied by DFT calculations and proton NMR experiments.
Collapse
Affiliation(s)
- Fabian Dankert
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- D-35032, Marburg
- Germany
| | - Kirsten Reuter
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- D-35032, Marburg
- Germany
| | - Carsten Donsbach
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- D-35032, Marburg
- Germany
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- D-35032, Marburg
- Germany
| |
Collapse
|
26
|
Yoshikawa M, Shiba H, Kanezashi M, Wada H, Shimojima A, Tsuru T, Kuroda K. Synthesis of a 12-membered cyclic siloxane possessing alkoxysilyl groups as a nanobuilding block and its use for preparation of gas permeable membranes. RSC Adv 2017. [DOI: 10.1039/c7ra09380b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
A twelve-membered cyclic siloxane possessing alkoxysilyl groups was newly synthesized as a nanobuilding block to form a gas permeable membrane.
Collapse
Affiliation(s)
- Masashi Yoshikawa
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Hiroya Shiba
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Masakoto Kanezashi
- Department of Chemical Engineering
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Hiroaki Wada
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Toshinori Tsuru
- Department of Chemical Engineering
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry
- Faculty of Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| |
Collapse
|
27
|
|
28
|
Reuter K, Buchner MR, Thiele G, von Hänisch C. Stable Alkali-Metal Complexes of Hybrid Disila-Crown Ethers. Inorg Chem 2016; 55:4441-7. [DOI: 10.1021/acs.inorgchem.6b00267] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kirsten Reuter
- Fachbereich Chemie
and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Magnus R. Buchner
- Fachbereich Chemie
and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Günther Thiele
- Department of Chemistry, University of California, 210 Lewis Hall, Berkeley, California 94720, United States
| | - Carsten von Hänisch
- Fachbereich Chemie
and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| |
Collapse
|
29
|
Reuter K, Thiele G, Hafner T, Uhlig F, von Hänisch C. Synthesis and coordination ability of a partially silicon based crown ether. Chem Commun (Camb) 2016; 52:13265-13268. [DOI: 10.1039/c6cc07520g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of the first hybrid crown ether with two adjacent disilane fragments is described. Coordination experiments and DFT calculation show a considerably higher complexation ability towards Li+ in comparison to [12]crown-4.
Collapse
Affiliation(s)
- Kirsten Reuter
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- Hans-Meerwein-Straße 4
- 35043 Marburg
- Germany
| | - Günther Thiele
- Department of Chemistry
- University of California
- Berkeley
- USA
| | - Thomas Hafner
- Institut für Anorganische Chemie
- TU Graz
- 6330 Graz
- Austria
| | - Frank Uhlig
- Institut für Anorganische Chemie
- TU Graz
- 6330 Graz
- Austria
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- Hans-Meerwein-Straße 4
- 35043 Marburg
- Germany
| |
Collapse
|
30
|
XeF2/Fluoride Acceptors as Versatile One-Electron Oxidants. Angew Chem Int Ed Engl 2013; 52:12838-42. [DOI: 10.1002/anie.201307161] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Indexed: 11/07/2022]
|
31
|
Poleschner H, Seppelt K. XeF2/Fluoridakzeptoren als vielseitige Einelektronen-Oxidationsmittel. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307161] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|