228) The Effective Width and Stiffness of T-formed Girder and Beam(Structure)

Higashi, Yoichi

doi:10.3130/aijsaxx.57.1.0_353

Cited by 10 publications

(10 citation statements)

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“…Each crystal was mounted on a nylon loop and at a position under continuous stream of nitrogen gas on the diffractometer. Diffraction measurements were made on a RIGAKU RAXIS-RAPID Imaging Plate diffractometer using graphite monochromated Mo Kα radiation (λ = 0.71073 A) at 150(2) K. Numerical absorption collections were made by use of the program NUMABS . The structures of 1 , 2 , 3 , and 5·C 7 H 8 were solved by Patterson and Fourier transform methods (SHELXS-97) and refined by full matrix least-squares technique on F 2 with SHELXL-2016 using Yadokari-XG 2009 software as a graphical user interface.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of a Molybdenum Hydrido(hydrogermylene) Complex and Its Conversion to a Germylyne Complex: Another Route through Dehydrogenation with Nitriles

et al. 2020

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A molybdenum germylene complex having Mo−H and Ge−H bonds, Cp*(CO) 2 (H)MoGe(H){C(SiMe 3 ) 3 } (1), was synthesized by the reaction of a methyl molybdenum complex with a trihydrogermane and was converted to a germylyne complex, Cp*(CO) 2 MoGe{C(SiMe 3 ) 3 } (2), via dehydrogenation with aryl isocyanates under mild heating. A similar conversion from the same germylene complex into the germylyne complex also occurred using nitriles instead of isocyanates, while releasing imines via a Mo−Ge−N three-membered ring complex Cp*(CO) 2 Mo[κ 2 (N,Ge)Ge-(N CHR){C(SiMe 3 ) 3 }] (4, R = Me and aryl groups) as an intermediate. Formation of imines was confirmed by a trapping experiment with BPh 3 , which afforded a BPh 3 -imine adduct. In the case of aryl nitriles, the corresponding three-membered ring intermediates were converted into the germylyne complex efficiently by blue LED light irradiation. TD-DFT calculations on the three-membered-ring intermediate suggest that the role of the LED light is to induce CO ligand dissociation from the intermediate via a metal-to-ligand-charge-transfer (MLCT) transition.

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Section: Methodsmentioning

confidence: 99%

Synthesis of a Molybdenum Hydrido(hydrogermylene) Complex and Its Conversion to a Germylyne Complex: Another Route through Dehydrogenation with Nitriles

et al. 2020

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“…Data were processed using CrystalClear or Bruker APEX III software packages . Absorption corrections were applied using either numerical or empirical methods. , Structures were solved using the direct method employing SHELXT software packages and refined on F 2 (with all independent reflections) using a SHELXL software package . In X-ray analysis, all H atoms at C–H bonds were located using a riding model, and H atoms at N–H or O–H bonds were located using electron-density difference maps, and refined isotropically.…”

Section: Methodsmentioning

confidence: 99%

Hydrogen-Bonded Supramolecular Structures of Cobalt(III) Complexes with Unsymmetrical Bidentate Ligands: mer/fac Interconversion Induced by Hydrogen-Bonding Interactions

Mitsuhashi

Suzuki²,

Hosoya

et al. 2016

Crystal Growth & Design

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Cobalt(III) complexes with three unsymmetrical bidentate ligands containing a noncoordinating N–H bond and a phenolate-O donor as hydrogen-bond donor and acceptor, respectively, were prepared and characterized. 1H NMR spectroscopy indicated that all the tris-chelate Co(III) complexes prepared favor the mer configuration in solution. [Co(Hthp)3] and [Co(Himn)3] also possess the mer configuration in the crystals (Hthp– = 2-(1,4,5,6-tetrahydropyrimidin-2-yl)phenolate, Himn– = 2-(2-imidazolinyl)phenolate). On the other hand, [Co(Himl)3] takes the fac configuration in the crystal (Himl– = 2-(2-imidazolyl)phenolate). These Co(III) complexes showed three types of characteristic supramolecular structures: ladder, distorted hexagonal sheet, and honeycomb sheet structure, constructed by intermolecular hydrogen bonds. Heating [Co(Himn)3] and [Co(Himl)3] in methanol selectively afforded precipitates of the fac isomer due to the low solubility of the hydrogen-bonded supramolecular structures. This mer to fac isomerization upon crystallization in methanol is presumably induced by the formation of highly ordered hydrogen-bond networks via the methanol molecule. The fac isomers remained intact in dimethyl sulfoxide (DMSO) for longer than a week at room temperature. Upon heating, however, fac to mer geometrical isomerization of both fac-[Co(Himn)3] and fac-[Co(Himl)3] was observed in DMSO. Thus, mer/fac interconversion was achieved by heating in two different solvents, due to the formation of a supramolecular assembly of hydrogen-bond networks.

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“…Reflections were collected for the 2θ range of 5° to 55°. Intensity data were corrected for numerical (NUMABS) absorptions and for Lorentz and polarization effects and for secondary extinction (coefficient, 77 (12) for 2a ) . The structure solution and refinements were carried out by using CrystalStructure package .…”

Section: Methodsmentioning

confidence: 99%

Synthesis and Reactivity of Ruthenium Complexes Bearing Arsenic-Containing Arsenic-Nitrogen-Arsenic-Type Pincer Ligand

et al. 2014

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228) The Effective Width and Stiffness of T-formed Girder and Beam(Structure)

Cited by 10 publications

References 0 publications

Synthesis of a Molybdenum Hydrido(hydrogermylene) Complex and Its Conversion to a Germylyne Complex: Another Route through Dehydrogenation with Nitriles

Synthesis of a Molybdenum Hydrido(hydrogermylene) Complex and Its Conversion to a Germylyne Complex: Another Route through Dehydrogenation with Nitriles

Hydrogen-Bonded Supramolecular Structures of Cobalt(III) Complexes with Unsymmetrical Bidentate Ligands: mer/fac Interconversion Induced by Hydrogen-Bonding Interactions

Synthesis and Reactivity of Ruthenium Complexes Bearing Arsenic-Containing Arsenic-Nitrogen-Arsenic-Type Pincer Ligand

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