scholarly journals Classification of Zintl Ion Clusters using 4n Series Approach

2016 ◽  
Vol 32 (4) ◽  
pp. 1731-1738
Author(s):  
Enos Kiremire
Keyword(s):  
Ion Clusters ◽  
Zintl Ion

Synthesis and characterization of the [Ni6Ge13(CO)5]4− and [Ge9Ni2(PPh3)]2− Zintl ion clusters

Polyhedron ◽  
2006 ◽  
Vol 25 (2) ◽  
pp. 521-529 ◽  
Author(s):  
Emren N. Esenturk ◽  
James Fettinger ◽  
Bryan Eichhorn
Keyword(s):  
Synthesis And Characterization ◽  
Ion Clusters ◽  
Zintl Ion

Optical and Vibrational Properties of [Pt@Pb12 ]2- , [Ni@Pb12 ]2- , and [Ni@Pb10 ]2- Zintl Ion Clusters

2017 ◽  
Vol 2017 (18) ◽  
pp. 2413-2421 ◽  
Author(s):  
Asude Cetin ◽  
Okan Esenturk ◽  
Emren Nalbant Esenturk
Keyword(s):  
Vibrational Properties ◽  
Ion Clusters ◽  
Zintl Ion

scholarly journals Carbonyl Chalcogenides Clusters Existing as Disguised Forms of Hydrocarbon Isomers

2016 ◽  
Vol 8 (3) ◽  
pp. 35
Author(s):  
Enos Masheija Rwantale Kiremire
Keyword(s):  
Metal Carbonyl ◽  
Structural Similarity ◽  
Borderline Case ◽  
The Other ◽  
Series Method ◽  
Ion Clusters ◽  
Chalcogenide Clusters ◽  
Wide Range ◽  
Zintl Ion ◽  
Equivalent Carbon

<p>The 4n Series Method has been utilized to categorize, analyze and predict structures for transition metal carbonyl, borane, hydrocarbon and Zintl ion clusters. The method is being extended to study carbonyl chalcogenide clusters. Adequate examples have been given to demonstrate the application of the 4n series method to categorize clusters and where possible predict their possible skeletal structures. In this paper, the method is being applied to the study of carbonyl chalcogenide cluster complexes. What has been found is the striking structural similarity of a wide range of carbonyl chalcogenide clusters to those of corresponding hydrocarbon clusters. It was observed that when a derived hydrocarbon from a cluster, F<sub>CH</sub> = C<sub>n</sub>H<sub>q</sub>, is such that n&lt;q, the cluster portrays structural similarity with an equivalent hydrocarbon. On the other hand when n&gt;q, the ‘hydrocarbon character’ becomes reduced and the typical cluster tendencies increase. When n = q, the situation becomes more or less a borderline case. When q=0, then F<sub>CH</sub> = C<sub>n</sub>. When the series becomes bi-capped or more, then the equivalent carbon cations are obtained.</p>

Optical and vibrational properties of nickel integrated germanium Zintl ion clusters

2019 ◽  
Vol 490 ◽  
pp. 16-23
Author(s):  
Esra Ogun ◽  
Okan Esenturk ◽  
Emren Nalbant Esenturk
Keyword(s):  
Vibrational Properties ◽  
Ion Clusters ◽  
Zintl Ion

Note on the spectral classification of carbon stars in the photographic infrared region

1966 ◽  
Vol 24 ◽  
pp. 21-23
Author(s):  
Y. Fujita
Keyword(s):  
Infrared Region ◽  
Spectral Classification ◽  
Carbon Stars

We have investigated the spectrograms (dispersion: 8Å/mm) in the photographic infrared region fromλ7500 toλ9000 of some carbon stars obtained by the coudé spectrograph of the 74-inch reflector attached to the Okayama Astrophysical Observatory. The names of the stars investigated are listed in Table 1.

Diagnostic Value of Electron Microscopy in Soft Tissue Tumors

1970 ◽  
Vol 28 ◽  
pp. 220-221
Author(s):  
Gerald Fine ◽  
Azorides R. Morales
Keyword(s):  
Cardiac Myxoma ◽  
Osteogenic Sarcoma ◽  
Diagnostic Value ◽  
Soft Tissue Tumors ◽  
Amelanotic Melanoma ◽  
Growth Patterns ◽  
Light Microscopic Level ◽  
Mesenchymal Tumors ◽  
Good Agreement

For years the separation of carcinoma and sarcoma and the subclassification of sarcomas has been based on the appearance of the tumor cells and their microscopic growth pattern and information derived from certain histochemical and special stains. Although this method of study has produced good agreement among pathologists in the separation of carcinoma from sarcoma, it has given less uniform results in the subclassification of sarcomas. There remain examples of neoplasms of different histogenesis, the classification of which is questionable because of similar cytologic and growth patterns at the light microscopic level; i.e. amelanotic melanoma versus carcinoma and occasionally sarcoma, sarcomas with an epithelial pattern of growth simulating carcinoma, histologically similar mesenchymal tumors of different histogenesis (histiocytoma versus rhabdomyosarcoma, lytic osteogenic sarcoma versus rhabdomyosarcoma), and myxomatous mesenchymal tumors of diverse histogenesis (myxoid rhabdo and liposarcomas, cardiac myxoma, myxoid neurofibroma, etc.)

Ultrastructure of mesotheliomas

1984 ◽  
Vol 42 ◽  
pp. 98-101
Author(s):  
Irving Dardick
Keyword(s):  
Electron Microscopy ◽  
Latent Period ◽  
Spindle Cell ◽  
Spindle Cell Sarcoma ◽  
Metastatic Adenocarcinoma ◽  
Cell Sarcoma ◽  
Cytological Features ◽  
Industrial Use ◽  
Degree Of Differentiation

With the extensive industrial use of asbestos in this century and the long latent period (20-50 years) between exposure and tumor presentation, the incidence of malignant mesothelioma is now increasing. Thus, surgical pathologists are more frequently faced with the dilemma of differentiating mesothelioma from metastatic adenocarcinoma and spindle-cell sarcoma involving serosal surfaces. Electron microscopy is amodality useful in clarifying this problem.In utilizing ultrastructural features in the diagnosis of mesothelioma, it is essential to appreciate that the classification of this tumor reflects a variety of morphologic forms of differing biologic behavior (Table 1). Furthermore, with the variable histology and degree of differentiation in mesotheliomas it might be expected that the ultrastructure of such tumors also reflects a range of cytological features. Such is the case.

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