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Boeré RT. Hydrogen Bonds Stabilize Chloroselenite Anions: Crystal Structure of a New Salt and Donor-Acceptor Bonding to SeO 2. Molecules 2023; 28:7489. [PMID: 38005211 PMCID: PMC10673179 DOI: 10.3390/molecules28227489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
The single-crystal X-ray diffraction structure characterizing a new 4-methylbenzamidinium salt of chloroselenite [C8H11N2][ClSeO2] is reported. This is only the second crystal structure report on a ClSeO2- salt. The structure contains an extended planar hydrogen bond net, including a double interaction with both O atoms of the anion (an R228 ring in Etter notation). The anion has the shortest Se-Cl distances on record for any chloroselenite ion, 2.3202(9) Å. However, the two Se-O distances are distinct at 1.629(2) and 1.645(2) Å, attributed to weak anion-anion bridging involving the oxygen with the longer bond. DFT computations at the RB3PW91-D3/aug-CC-pVTZ level of theory reproduce the short Se-Cl distance in a gas-phase optimized ion pair, but free optimization of ClSeO2- leads to an elongation of this bond. A good match to a known value for [Me4N][ClSeO2] is found, which fits to the Raman spectroscopic evidence for this long-known salt and to data measured on solutions of the anion in CH3CN. The assignment of the experimental Raman spectrum was corrected by means of the DFT-computed vibrational spectrum, confirming the strong mixing of the symmetry coordinate of the Se-Cl stretch with both ν2 and ν4 modes.
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Affiliation(s)
- René T. Boeré
- Department of Chemistry and Biochemistry, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada;
- Canadian Centre for Research in Applied Fluorine Technologies (C-CRAFT), University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
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2
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Hu JP, Lin Q, Yao H, Zhang YM, Wei TB. Rationally Designed a silent AIE oxidation platform based on pillar[5]arene for H2PO4- and vitamin C (Vc) sensor. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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3
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Valdez NR, Herman DJ, Nemer MB, Rodriguez MA, Allcorn E. Crystal structures of polymerized lithium chloride and dimethyl sulfoxide in the form of {2LiCl·3DMSO} n and {LiCl·DMSO} n. Acta Crystallogr E Crystallogr Commun 2023; 79:33-37. [PMID: 36628363 PMCID: PMC9815132 DOI: 10.1107/s2056989022011896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
Two novel LiCl·DMSO polymer structures were created by combining dry LiCl salt with dimethyl sulfoxide (DMSO), namely, catena-poly[[chlorido-lithium(I)]-μ-(dimethyl sulfoxide)-κ2 O:O-[chlorido-lithium(I)]-di-μ-(dimethyl sulfoxide)-κ4 O:O], [Li2Cl2(C2H6OS)3] n , and catena-poly[lithium(I)-μ-chlorido-μ-(dimethyl sulfoxide)-κ2 O:O], [LiCl(C2H6OS)] n . The initial synthesized phase had very small block-shaped crystals (<0.08 mm) with monoclinic symmetry and a 2 LiCl: 3 DMSO ratio. As the solution evaporated, a second phase formed with a plate-shaped crystal morphology. After about 20 minutes, large (>0.20 mm) octa-hedron-shaped crystals formed. The plate crystals and the octa-hedron crystals are the same tetra-gonal structure with a 1 LiCl: 1 DMSO ratio. These structures are reported and compared to other known LiCl·solvent compounds.
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Affiliation(s)
- Nichole R. Valdez
- Sandia National Laboratories, 1515 Eubank Blvd. SE, Albuquerque, NM 87123, USA,Correspondence e-mail:
| | - David J. Herman
- Sandia National Laboratories, 1515 Eubank Blvd. SE, Albuquerque, NM 87123, USA
| | - Martin B. Nemer
- Sandia National Laboratories, 1515 Eubank Blvd. SE, Albuquerque, NM 87123, USA
| | - Mark A. Rodriguez
- Sandia National Laboratories, 1515 Eubank Blvd. SE, Albuquerque, NM 87123, USA
| | - Eric Allcorn
- Sandia National Laboratories, 1515 Eubank Blvd. SE, Albuquerque, NM 87123, USA
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4
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Dankert F, Gupta P, Wellnitz T, Baumann W, Hering-Junghans C. Deoxygenation of chalcogen oxides EO 2 (E = S, Se) with phospha-Wittig reagents. Dalton Trans 2022; 51:18642-18651. [PMID: 36448405 DOI: 10.1039/d2dt03703c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
In here we present the deoxygenation of the chalcogen oxides EO2 (E = S, Se) with R-P(PMe3), so-called phospha-Wittig reagents. The reaction of DABSO (DABCO·2SO2) with R-P(PMe3) (R = Mes*, 2,4,6-tBu3-C6H2; MesTer, 2,6-(2,4,6-Me3-C6H2)2-C6H3) resulted in the formation of thiadiphosphiranes (RP)2S (1:R), while selenadiphosphiranes (RP)2Se (2:R) were afforded with SeO2, both accompanied by the formation of OPMe3. Utilizing the sterically more encumbered DipTer-P(PMe3) (DipTer = 2,6-(2,6-iPr2-C6H3)2-C6H3) a different selectivity was observed and (DipTerP)2Se (2:DipTer) along with [Se(μ-PDipTer)]2 (3:DipTer) were isolated as the Se-containing species in the reaction with SeO2. Interestingly, the reaction with DABSO (or with equimolar ratios of SeO2 at elevated temperatures) gave rise to the formation of the OPMe3-stabilized dioxophosphorane (phosphinidene dioxide) DipTerP(O)2-OPMe3 (4:DipTer) as the main product. This contrasting reactivity can be rationalized by two potential pathways in the reaction with EO2: (i) a Wittig-type pathway and (ii) a pathway involving oxygenation of the phospha-Wittig reagents and release of SO. Thus, phospha-Wittig reagents are shown to be useful synthetic tools for the metal-free deoxygenation of EO2 (E = S, Se).
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Affiliation(s)
- Fabian Dankert
- Leibniz Institut für Katalyse e.V. (LIKAT), A.-Einstein-Str.3a, 18059 Rostock, Germany.
| | - Priyanka Gupta
- Leibniz Institut für Katalyse e.V. (LIKAT), A.-Einstein-Str.3a, 18059 Rostock, Germany.
| | - Tim Wellnitz
- Leibniz Institut für Katalyse e.V. (LIKAT), A.-Einstein-Str.3a, 18059 Rostock, Germany.
| | - Wolfgang Baumann
- Leibniz Institut für Katalyse e.V. (LIKAT), A.-Einstein-Str.3a, 18059 Rostock, Germany.
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5
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Junk PC, Werner D, Rad NE, Guo Z, Deacon GB. New Interventions by silicone grease in synthesis. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Peter Courtney Junk
- James Cook University Dept. of Chemistry James Cook Drive 4811 Townsville AUSTRALIA
| | - Daniel Werner
- School of Chemistry, Monash University, Clayton 3800, Australia AUSTRALIA
| | - Nazli E. Rad
- College of Science & Engineering, James Cook University, Townsville 4811, Qld, Australia AUSTRALIA
| | - Zhifang Guo
- College of Science & Engineering, James Cook University, Townsville 4811, Qld, Australia AUSTRALIA
| | - Glen B. Deacon
- School of Chemistry, Monash University, Clayton 3800, Australia AUSTRALIA
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6
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Heterocyclic Crown Ethers with Potential Biological and Pharmacological Properties: From Synthesis to Applications. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12031102] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Cyclic organic compounds with several ether linkages in their structure are of much concern in our daily life applications. Crown ethers (CEs) are generally heterocyclic and extremely versatile compounds exhibiting higher binding affinity. In recent years, due to their unique structure, crown ethers are widely used in drug delivery, solvent extraction, cosmetics manufacturing, material studies, catalysis, separation, and organic synthesis. Beyond their conventional place in chemistry, this review article summarizes the synthesis, biological, and potential pharmacological activities of CEs. We have emphasized the prospects of CEs as anticancer, anti-inflammatory, antibacterial, and antifungal agents and have explored their amyloid genesis inhibitory activity, electrochemical, and potential metric sensing properties. The central feature of these compounds is their ability to form selective and stable complexes with various organic and inorganic cations. Therefore, CEs can be used in gas chromatography as the stationary phase and are also valuable for cation chromatographic to determine and separate alkali and alkaline-earth cations.
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Ariyarathna IR, Miliordos E. Ground and excited states analysis of alkali metal ethylenediamine and crown ether complexes. Phys Chem Chem Phys 2021; 23:20298-20306. [PMID: 34486608 DOI: 10.1039/d1cp02552j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High-level electronic structure calculations are carried out to obtain optimized geometries and excitation energies of neutral lithium, sodium, and potassium complexes with two ethylenediamine and one or two crown ether molecules. Three different sizes of crowns are employed (12-crown-4, 15-crown-5, 18-crown-6). The ground state of all complexes contains an electron in an s-type orbital. For the mono-crown ether complexes, this orbital is the polarized valence s-orbital of the metal, but for the other systems this orbital is a peripheral diffuse orbital. The nature of the low-lying electronic states is found to be different for each of these species. Specifically, the metal ethylenediamine complexes follow the previously discovered shell model of metal ammonia complexes (1s, 1p, 1d, 2s, 1f), but both mono- and sandwich di-crown ether complexes bear a different shell model partially due to their lower (cylindrical) symmetry and the stabilization of the 2s-type orbital. Li(15-crown-5) is the only complex with the metal in the middle of the crown ether and adopts closely the shell model of metal ammonia complexes. Our findings suggest that the electronic band structure of electrides (metal crown ether sandwich aggregates) and expanded metals (metal ammonia aggregates) should be different despite the similar nature of these systems (bearing diffuse electrons around a metal complex).
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Affiliation(s)
- Isuru R Ariyarathna
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, USA.
| | - Evangelos Miliordos
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849-5312, USA.
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8
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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
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9
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Ghosh K, Frontera A, Chattopadhyay S. A theoretical insight on the anion⋯anion interactions observed in the solid state structure of a hetero-trinuclear complex. CrystEngComm 2021. [DOI: 10.1039/d0ce01513j] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A hetero-nuclear cobalt(iii)/potassium complex has been synthesized and characterized by several analytical techniques. DFT computations indicate the existence of anion⋯anion interactions in its solid state.
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Affiliation(s)
- Kousik Ghosh
- Department of Chemistry
- Inorganic Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Antonio Frontera
- Departamento de Química
- Universitat de les Illes Balears
- 07122 Palma
- Spain
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10
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Banerjee A, Chattopadhyay S. Dinuclear mixed valence cobalt(II/III) and hetero-tetranuclear cobalt(III)/Na complexes with a compartmental ligand: Synthesis, characterization and use as catalysts for oxidative dimerisation of 2-aminophenol. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120044] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Dankert F, Feyh A, von Hänisch C. Chalcogen Bonding of SO
2
and s‐Block Metal Iodides Near Room Temperature: A Remarkable Structural Diversity. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fabian Dankert
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW) Philipps‐Universität Marburg Hans‐Meerwein Str. 4 35032 Marburg Germany
| | - Anne Feyh
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW) Philipps‐Universität Marburg Hans‐Meerwein Str. 4 35032 Marburg Germany
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW) Philipps‐Universität Marburg Hans‐Meerwein Str. 4 35032 Marburg Germany
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12
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Chemically tunable DILs: Physical properties and highly efficient capture of low-concentration SO2. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116572] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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13
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Dankert F, Deubner HL, Müller M, Buchner MR, Kraus F, von Hänisch C. C–F Bond Cleavage Reactions with Beryllium, Magnesium, Gallium, Hafnium, and Thorium Halides. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900297] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fabian Dankert
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW) Philipps‐Universität Marburg Hans‐Meerwein Str. 4 35032 Marburg Germany
| | - H. Lars Deubner
- Fachbereich Chemie: Anorganische Chemie Fluorchemie Philipps‐Universität Marburg Hans‐Meerwein Str. 4 35032 Marburg Germany
| | - Matthias Müller
- Fachbereich Chemie: Anorganische Chemie Nachwuchsgruppe Berylliumchemie Philipps‐Universität Marburg Hans‐Meerwein Str. 4 35032 Marburg Germany
| | - Magnus R. Buchner
- Fachbereich Chemie: Anorganische Chemie Nachwuchsgruppe Berylliumchemie Philipps‐Universität Marburg Hans‐Meerwein Str. 4 35032 Marburg Germany
| | - Florian Kraus
- Fachbereich Chemie: Anorganische Chemie Fluorchemie Philipps‐Universität Marburg Hans‐Meerwein Str. 4 35032 Marburg Germany
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW) Philipps‐Universität Marburg Hans‐Meerwein Str. 4 35032 Marburg Germany
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14
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Buchner MR. Beryllium coordination chemistry and its implications on the understanding of metal induced immune responses. Chem Commun (Camb) 2020; 56:8895-8907. [DOI: 10.1039/d0cc03802d] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The coordination chemistry of beryllium with ligands containing biologically relevant functional groups is discussed. The geometry, speciation and reactivity of these compounds, aids a better understanding of metal ion induced immune reactions.
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Affiliation(s)
- Magnus R. Buchner
- Anorganische Chemie
- Nachwuchsgruppe Hauptgruppenmetallchemie
- Fachbereich Chemie
- Philipps-Universität Marburg
- 35032 Marburg
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15
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Zhao Q, Gong GF, Yang HL, Zhang QP, Yao H, Zhang YM, Lin Q, Qu WJ, Wei TB. Pillar[5]arene-based supramolecular AIE hydrogel with white light emission for ultrasensitive detection and effective separation of multianalytes. Polym Chem 2020. [DOI: 10.1039/d0py00872a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel pillar[5]arene-based supramolecular AIE hydrogel (PDG) with white light emission was constructed. The PDG could be used for ultrasensitive detection and effective separation of multianalytes, and as fluorescent display materials.
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Affiliation(s)
- Qi Zhao
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education
- Key Laboratory of Eco-environmental Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Guan-Fei Gong
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education
- Key Laboratory of Eco-environmental Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Hai-Long Yang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education
- Key Laboratory of Eco-environmental Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Qin-Peng Zhang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education
- Key Laboratory of Eco-environmental Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Hong Yao
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education
- Key Laboratory of Eco-environmental Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - You-Ming Zhang
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education
- Key Laboratory of Eco-environmental Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Qi Lin
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education
- Key Laboratory of Eco-environmental Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Wen-Juan Qu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education
- Key Laboratory of Eco-environmental Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Tai-Bao Wei
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education
- Key Laboratory of Eco-environmental Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
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16
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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.
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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
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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.
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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
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18
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Scilabra P, Terraneo G, Resnati G. The Chalcogen Bond in Crystalline Solids: A World Parallel to Halogen Bond. Acc Chem Res 2019; 52:1313-1324. [PMID: 31082186 DOI: 10.1021/acs.accounts.9b00037] [Citation(s) in RCA: 250] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The distribution of the electron density around covalently bonded atoms is anisotropic, and this determines the presence, on atoms surface, of areas of higher and lower electron density where the electrostatic potential is frequently negative and positive, respectively. The ability of positive areas on atoms to form attractive interactions with electron rich sites became recently the subject of a flurry of papers. The halogen bond (HaB), the attractive interaction formed by halogens with nucleophiles, emerged as a quite common and dependable tool for controlling phenomena as diverse as the binding of small molecules to proteinaceous targets or the organization of molecular functional materials. The mindset developed in relation to the halogen bond prompted the interest in the tendency of elements of groups 13-16 of the periodic table to form analogous attractive interactions with nucleophiles. This Account addresses the chalcogen bond (ChB), the attractive interaction formed by group 16 elements with nucleophiles, by adopting a crystallographic point of view. Structures of organic derivatives are considered where chalcogen atoms form close contacts with nucleophiles in the geometry typical for chalcogen bonds. It is shown how sulfur, selenium, and tellurium can all form chalcogen bonds, the tendency to give rise to close contacts with nucleophiles increasing with the polarizability of the element. Also oxygen, when conveniently substituted, can form ChBs in crystalline solids. Chalcogen bonds can be strong enough to allow for the interaction to function as an effective and robust tool in crystal engineering. It is presented how chalcogen containing heteroaromatics, sulfides, disulfides, and selenium and tellurium analogues as well as some other molecular moieties can afford dependable chalcogen bond based supramolecular synthons. Particular attention is given to chalcogen containing azoles and their derivatives due to the relevance of these moieties in biosystems and molecular materials. It is shown how the interaction pattern around electrophilic chalcogen atoms frequently recalls the pattern around analogous halogen, pnictogen, and tetrel derivatives. For instance, directionalities of chalcogen bonds around sulfur and selenium in some thiazolium and selenazolium derivatives are similar to directionalities of halogen bonds around bromine and iodine in bromonium and iodonium compounds. This gives experimental evidence that similarities in the anisotropic distribution of the electron density in covalently bonded atoms translates in similarities in their recognition and self-assembly behavior. For instance, the analogies in interaction patterns of carbonitrile substituted elements of groups 17, 16, 15, and 14 will be presented. While the extensive experimental and theoretical data available in the literature prove that HaB and ChB form twin supramolecular synthons in the solid, more experimental information has to become available before such a statement can be safely extended to interactions wherein elements of groups 14 and 15 are the electrophiles. It will nevertheless be possible to develop some general heuristic principles for crystal engineering. Being based on the groups of the periodic table, these principles offer the advantage of being systematic.
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Affiliation(s)
- Patrick Scilabra
- Department of Chemistry, Materials, and Chemical Engineering ’’Giulio Natta’’, Politecnico di Milano, via Mancinelli 7, I-20131 Milano, Italy
| | - Giancarlo Terraneo
- Department of Chemistry, Materials, and Chemical Engineering ’’Giulio Natta’’, Politecnico di Milano, via Mancinelli 7, I-20131 Milano, Italy
| | - Giuseppe Resnati
- Department of Chemistry, Materials, and Chemical Engineering ’’Giulio Natta’’, Politecnico di Milano, via Mancinelli 7, I-20131 Milano, Italy
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19
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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
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20
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Affiliation(s)
- Markus Balmer
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften; Philipps-Universität Marburg; 35032 Marburg Germany
| | - Carsten von Hänisch
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften; Philipps-Universität Marburg; 35032 Marburg Germany
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21
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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.
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22
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Dankert F, Heine J, Rienmüller J, von Hänisch C. Sila-polyethers as innocent crystallization reagents for heavy alkali metal compounds. CrystEngComm 2018. [DOI: 10.1039/c8ce01097h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sila-polyethers are used as innocent crystallization reagents for the formation of single crystals of different elusive rubidium and cesium salts.
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Affiliation(s)
- Fabian Dankert
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- Marburg
- Germany
| | - Johanna Heine
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW)
- Philipps-Universität Marburg
- Marburg
- Germany
| | - Julia Rienmüller
- 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
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23
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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.
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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
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24
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Ghosh K, Harms K, Bauzá A, Frontera A, Chattopadhyay S. Heteronuclear cobalt(iii)/sodium complexes with salen type compartmental Schiff base ligands: methylene spacer regulated variation in nuclearity. Dalton Trans 2018; 47:331-347. [DOI: 10.1039/c7dt03929h] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Three unique heteronuclear cobalt(iii)/sodium Schiff base complexes have been synthesized and characterized. Nuclearity of these complexes changes as a result of alteration of the steric hindrance in the ligand moiety.
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Affiliation(s)
- Kousik Ghosh
- Department of Chemistry
- Inorganic Section
- Jadavpur University
- Kolkata 700032
- India
| | - Klaus Harms
- Fachbereich Chemie
- Philipps-Universität Marburg
- Hans-Meerwein-Strasse
- D-35032 Marburg
- Germany
| | - Antonio Bauzá
- Departament de Química
- Universitat de les Illes Balears
- 07122 Palma
- Spain
| | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- 07122 Palma
- Spain
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25
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Jiang XM, Huang XJ, Song SS, Ma XQ, Zhang YM, Yao H, Wei TB, Lin Q. Tri-pillar[5]arene-based multi-stimuli-responsive supramolecular polymers for fluorescence detection and separation of Hg2+. Polym Chem 2018. [DOI: 10.1039/c8py01085d] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A novel tri-pillar[5]arene based supramolecular polymer (JP5G) shows multiple stimuli-response properties and could detect and remove Hg2+ from aqueous solution.
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Affiliation(s)
- Xiao-Mei Jiang
- Key Laboratory of Eco-Environment-Related Polymer Materials
- Ministry of Education of China
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
| | - Xiao-Juan Huang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Shan-Shan Song
- Key Laboratory of Eco-Environment-Related Polymer Materials
- Ministry of Education of China
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
| | - Xiao-Qiang Ma
- Key Laboratory of Eco-Environment-Related Polymer Materials
- Ministry of Education of China
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
| | - You-Ming Zhang
- Key Laboratory of Eco-Environment-Related Polymer Materials
- Ministry of Education of China
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
| | - Hong Yao
- Key Laboratory of Eco-Environment-Related Polymer Materials
- Ministry of Education of China
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
| | - Tai-Bao Wei
- Key Laboratory of Eco-Environment-Related Polymer Materials
- Ministry of Education of China
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
| | - Qi Lin
- Key Laboratory of Eco-Environment-Related Polymer Materials
- Ministry of Education of China
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
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26
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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
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