Total structural determination of [Au1Ag24(Dppm)3(SR)17]2+ comprising an open icosahedral Au1Ag12 core with six free valence electrons

2019 ◽  
Vol 55 (45) ◽  
pp. 6457-6460 ◽  
Author(s):  
Yangfeng Li ◽  
Manman Zhou ◽  
Shan Jin ◽  
Lin Xiong ◽  
Qianqin Yuan ◽  
...  
Keyword(s):  
Free Valence ◽  
Structural Determination ◽  
Valence Electrons

Herein, we report the first silver-rich nanocluster containing an open icosahedral Au1Ag12 core.

Inelastic Electron Scattering from Valence Electrons in Aluminum

1976 ◽  
Vol 34 ◽  
pp. 462-463
Author(s):  
P. E. Batson ◽  
C. H. Chen ◽  
J. Silcox
Keyword(s):  
Electron Scattering ◽  
Single Scattering ◽  
Three Dimensions ◽  
Inelastic Electron ◽  
Weak Beam ◽  
Scattering Spectrum ◽  
Valence Electrons ◽  
Diffraction Patterns ◽  
Electronic Scattering

We wish to report in this paper measurements of the inelastic scattering component due to the collective excitations (plasmons) and single particlehole excitations of the valence electrons in Al. Such scattering contributes to the diffuse electronic scattering seen in electron diffraction patterns and has recently been considered of significance in weak-beam images (see Gai and Howie) . A major problem in the determination of such scattering is the proper correction for multiple scattering. We outline here a procedure which we believe suitably deals with such problems and report the observed single scattering spectrum.In principle, one can use the procedure of Misell and Jones—suitably generalized to three dimensions (qx, qy and #x2206;E)--to derive single scattering profiles. However, such a computation becomes prohibitively large if applied in a brute force fashion since the quasi-elastic scattering (and associated multiple electronic scattering) extends to much larger angles than the multiple electronic scattering on its own.

Isolation and structural determination of cyclic lipopeptide from cultured freshwater cyanobacterium Oscillatoria sp. (UIC 10045)

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
S Luo ◽  
HS Kang ◽  
AM Krunic ◽  
J Yang ◽  
SM Swanson ◽  
...  
Keyword(s):  
Structural Determination ◽  
Cyclic Lipopeptide ◽  
Freshwater Cyanobacterium

ROTATIONAL SPECTRA AND STRUCTURAL DETERMINATION OF HCCNCS

2017 ◽  
Author(s):  
Wenhao Sun ◽  
Jennifer van Wijngaarden ◽  
Rebecca Davis
Keyword(s):  
Structural Determination ◽  
Rotational Spectra

Structural Determination of Certain Novel ER Complexes

2004 ◽  
Author(s):  
Ya-Ling Wu ◽  
Geoffrey L. Greene
Keyword(s):  
Structural Determination

Phytochemical Constituents of Annona reticulata and their Cytotoxic Activity

2020 ◽  
Vol 17 (3) ◽  
pp. 206-210
Author(s):  
Ty Viet Pham ◽  
Thang Quoc Le ◽  
Anh Tuan Le ◽  
Hung Quoc Vo ◽  
Duc Viet Ho
Keyword(s):  
Cytotoxic Activity ◽  
Cell Lines ◽  
Structural Determination ◽  
Phytochemical Investigation ◽  
Ic50 Values ◽  
Phytochemical Constituents ◽  
First Time ◽  
Annona Reticulata

A phytochemical investigation of the leaves of Annona reticulata led to the isolation and structural determination of β-sitosterol (1), ent-pimara-8(14),15-dien-19-oic acid (2), ent-pimara- 8(14),15-dien-19-ol (3), quercetin (4), quercetin 3-O-α-L-arabinopyranoside (5), and a mixture of quercetin 3-O-β-D-galactopyranoside (6a) and quercetin 3-O-β-D-glucopyranoside (6b). Of these, compounds 2 and 3 were isolated from the genus Annona for the first time. Compound 3 showed strong cytotoxicity against SK-LU-1 and SW626 cell lines with IC50 values of 17.64 ± 1.07 and 19.79 ± 1.41 μg mL-1, respectively.

Structural Determination of the Hydrofullerene C60D36 by Neutron Diffraction

1998 ◽  
Vol 54 (3) ◽  
pp. 345-350 ◽  
Author(s):  
L. E. Hall ◽  
D. R. McKenzie ◽  
R. L. Davis ◽  
M. I. Attalla ◽  
A. M. Vassallo
Keyword(s):  
Neutron Diffraction ◽  
Density Function ◽  
Diffraction Data ◽  
Fourier Transformation ◽  
Structural Determination ◽  
Molecular Models ◽  
Reduced Density ◽  
C Nmr

A mixture of C60D36 with 24.5 \pm 4.5% C60 by weight has been analysed by neutron diffraction techniques. The diffraction data was converted to a reduced density function G(r) by Fourier transformation. The C60 component of the G(r) was subtracted out. This enabled a comparison for five molecular models of C60D36, with symmetries T, Th , S 6 and two D 3 d isomers, with the experimental G(r). This specimen of C60D36 was found to be best described by a T symmetry isomer, in agreement with 13C NMR and IR data for C60H36 [Attalla et al. (1993). J. Phys. Chem. pp. 6329–6331].

Structural Determination of High Density, ATRP Grown Polystyrene Brushes by Neutron Reflectivity

2009 ◽  
Vol 42 (24) ◽  
pp. 9523-9527 ◽  
Author(s):  
John R. Ell ◽  
Dennis E. Mulder ◽  
Roland Faller ◽  
Timothy E. Patten ◽  
Tonya L. Kuhl
Keyword(s):  
High Density ◽  
Neutron Reflectivity ◽  
Structural Determination

Structural Determination of a Metastable Ag27 Nanocluster and Its Transformations into Ag8 and Ag29 Nanoclusters

2021 ◽  
Author(s):  
Chen Zhu ◽  
Tenfei Duan ◽  
Hao Li ◽  
Xiao Wei ◽  
Xi Kang ◽  
...  
Keyword(s):  
Structure Determination ◽  
Structural Determination ◽  
To Receive

Research on nanocluster transformation has generally focused on stable nanoclusters, while analysis on structure evolutions of metastable nanoclusters just began to receive attention recently. Herein, we reported the structure determination...

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