scholarly journals Non-Covalent Interactions in Coordination and Organometallic Chemistry

Crystals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 537
Author(s):  
Alexander S. Novikov
Keyword(s):  
Organometallic Chemistry ◽  
Crystal Engineering ◽  
Material Science ◽  
Scientific Community ◽  
Organometallic Compounds ◽  
Special Issue ◽  
Fundamental Study ◽  
The Past ◽  
Non Covalent Interactions ◽  
Covalent Interactions

The problem of non-covalent interactions in coordination and organometallic compounds is a hot topic in modern chemistry, material science, crystal engineering and related fields of knowledge. Researchers in various fields of chemistry and other disciplines (physics, crystallography, computer science, etc.) are welcome to submit their works on this topic for our Special Issue “Non-Covalent Interactions in Coordination and Organometallic Chemistry”. The aim of this Special Issue is to highlight and overview modern trends and draw the attention of the scientific community to various types of non-covalent interactions in coordination and organometallic compounds. In this editorial, I would like to briefly highlight the main successes of our research group in the field of the fundamental study of non-covalent interactions in coordination and organometallic compounds over the past 5 years.

scholarly journals Recognition and Sensing of Chiral Organic Molecules by Chiral Porphyrinoids: A Review

Chemosensors ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 204
Author(s):  
Gabriele Travagliante ◽  
Massimiliano Gaeta ◽  
Roberto Purrello ◽  
Alessandro D’Urso
Keyword(s):  
Scientific Community ◽  
Chiral Recognition ◽  
Organic Molecules ◽  
Chiral Discrimination ◽  
Spectroscopic Techniques ◽  
Chiral Molecules ◽  
Relevant Research ◽  
Non Covalent Interactions ◽  
Organic Guests ◽  
Covalent Interactions

Porphyrinoids are extremely attractive for their electronic, optical, and coordination properties as well as for their versatile substitution at meso/β-positions. All these features allow porphyrinoids to behave as chiroptical hosts for chiral recognition by means of non-covalent interactions towards chiral guests. Over the years, chiral discrimination of chiral molecules such as amino acids, alcohols, amines, hydroxy-carboxylic acids, etc. has aroused the interest of the scientific community. Hence, this review aims to report on the progress to date by illustrating some relevant research regarding the chiral recognition of a multitude of chiral organic guests through several chiral mono- and bis-porphyrins via different spectroscopic techniques.

scholarly journals Special Issue “Chemical Speciation of Organic and Inorganic Components of Environmental and Biological Interest in Natural Fluids: Behaviour, Interaction and Sequestration”

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 826
Author(s):  
Francesco Crea ◽  
Alberto Pettignano
Keyword(s):  
Scientific Community ◽  
Chemical Speciation ◽  
Special Issue ◽  
The Past ◽  
Biological Interest ◽  
Inorganic Components

Several different definitions were in the past proposed to describe the term chemical speciation, and some of them were accepted from the scientific community [...]

scholarly journals Sensors and Sensing for Intelligent Vehicles

Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5115
Author(s):  
David Fernández Llorca ◽  
Iván García Daza ◽  
Noelia Hernández Parra ◽  
Ignacio Parra Alonso
Keyword(s):  
Scientific Community ◽  
Intelligent Vehicles ◽  
Complete Analysis ◽  
Special Issue ◽  
Operational Environment ◽  
Efficient Operation ◽  
Technical Problems ◽  
The Past ◽  
Infinite Variety ◽  
Great Complexity

Over the past decades, both industry and academy have made enormous advancements in the field of intelligent vehicles, and a considerable number of prototypes are now driving our roads, railways, air and sea autonomously. However, there is still a long way to go before a widespread adoption. Among all the scientific and technical problems to be solved by intelligent vehicles, the ability to perceive, interpret, and fully understand the operational environment, as well as to infer future states and potential hazards, represent the most difficult and complex tasks, being probably the main bottlenecks that the scientific community and industry must solve in the coming years to ensure the safe and efficient operation of the vehicles (and, therefore, their future adoption). The great complexity and the almost infinite variety of possible scenarios in which an intelligent vehicle must operate, raise the problem of perception as an "endless" issue that will always be ongoing. As a humble contribution to the advancement of vehicles endowed with intelligence, we organized the Special Issue on Intelligent Vehicles. This work offers a complete analysis of all the mansucripts published, and presents the main conclusions drawn.

Willgerodt-Type Dichloro(aryl)-λ3-Iodanes: A Structural Study

Synthesis ◽  
2019 ◽  
Vol 51 (23) ◽  
pp. 4408-4416
Author(s):  
Jérôme C. Sarie ◽  
Jessica Neufeld ◽  
Constantin G. Daniliuc ◽  
Ryan Gilmour
Keyword(s):  
Structural Analysis ◽  
Structural Study ◽  
Crystal Engineering ◽  
Solution Phase ◽  
Nmr Analysis ◽  
Aryl Ring ◽  
Non Covalent Interactions ◽  
Covalent Interactions ◽  
Structural Insights

Crystallographic structural analysis of four electronically diverse Willgerodt-type reagents is disclosed together with a solution-phase NMR analysis. These data reveal a plethora of intermolecular non-covalent interactions and confirm the expected T-shape geometry of the reagents. In all cases the I–Cl bonds are orthogonal to the plane of the aryl ring. This study provides important structural insights into this venerable class of dichlorination reagent and has implications for crystal engineering.

scholarly journals The Legacy Lives on, a Year Later: Dr. Stan A. Kuczaj A Special Issue –Part 2

2017 ◽  
Vol 30 ◽  
Author(s):  
Holli C. Eskelinen ◽  
Heather M. Hill ◽  
Rachel T. Walker ◽  
Marie Trone
Keyword(s):  
Scientific Community ◽  
Special Issue ◽  
Common Goal ◽  
University Of Southern Mississippi ◽  
Scientific Legacy ◽  
The Past ◽  
The Common ◽  
The University ◽  
Time And Energy ◽  
Behavior And Cognition

The scientific community has mourned the loss of Dr. Stan Kuczaj, Professor at The University of Southern Mississippi and Director of the Marine Mammal Behavior and Cognition Laboratory, for the past year. In this time of grieving and reminiscing, his scientific legacy has continued to live on through students, collaborators and trusted colleagues. Stan’s passing has acted in part as a motivator to continue to publish works that he invested time and energy in as a tribute, seeing his visions through to fruition. In addition to publishing droves of literature, his colleagues within the development and comparative fields have bound together for the common goal of advancing the science through new collaborations, merged resources, and tackling innovative topics in comparative studies. This second commemorative special issue is a testament to the vast scope of Stan’s impact on the scientific community, as well as his legacy that each of his students and colleagues continues to cultivate. Ten additional papers round out our initial tribute to Dr. Stan Kuczaj in honor of his lifetime achievements.

A top–down approach to crystal engineering of a racemic Δ2-isoxazoline

2014 ◽  
Vol 70 (1) ◽  
pp. 172-180 ◽  
Author(s):  
Giuseppe M. Lombardo ◽  
Antonio Rescifina ◽  
Ugo Chiacchio ◽  
Alessia Bacchi ◽  
Francesco Punzo
Keyword(s):  
Crystal Structure ◽  
Crystal Engineering ◽  
Density Functional ◽  
Crystal Habit ◽  
X Ray Diffraction ◽  
Top Down ◽  
Functional Theory ◽  
X Ray ◽  
Non Covalent Interactions ◽  
Covalent Interactions

The crystal structure of racemic dimethyl (4RS,5RS)-3-(4-nitrophenyl)-4,5-dihydroisoxazole-4,5-dicarboxylate, C13H12N2O7, has been determined by single-crystal X-ray diffraction. By analysing the degree of growth of the morphologically important crystal faces, a ranking of the most relevant non-covalent interactions determining the crystal structure can be inferred. The morphological information is considered with an approach opposite to the conventional one: instead of searching inside the structure for the potential key interactions and using them to calculate the crystal habit, the observed crystal morphology is used to define the preferential lines of growth of the crystal, and then this information is interpreted by means of density functional theory (DFT) calculations. Comparison with the X-ray structure confirms the validity of the strategy, thus suggesting this top–down approach to be a useful tool for crystal engineering.

scholarly journals Improving Phase-Transfer Catalysis by Enhancing Non-Covalent Interactions

2020 ◽  
Author(s):  
Iñigo Iribarren ◽  
Cristina Trujillo
Keyword(s):  
Asymmetric Catalysis ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Intermolecular Hydrogen Bond ◽  
Pair Interaction ◽  
Unsaturated Ketone ◽  
Asymmetric Transformations ◽  
The Past ◽  
Non Covalent Interactions ◽  
Covalent Interactions

<p>A wide variety of asymmetric transformations catalysed by chiral catalysts have been developed for the synthesis of valuable organic compounds in the past several decades. Within asymmetric catalysis field, phase-transfer catalysis has been recognized as a powerful method for establishing useful procedures for organic synthesis. In the present study intermolecular interactions between a well-known alkaloid quinine-derived phase transfer catalyst and four different anions were characterised, analysing the competition between the pure ion-pair interaction and the intermolecular hydrogen bond established upon complexation. Finally, the energy profile corresponding to the enantioselective conjugate cyanation of a a,b-unsaturated ketone, under the presence of two different catalysts were performed.</p>

scholarly journals Improving Phase-Transfer Catalysis by Enhancing Non-Covalent Interactions

2020 ◽  
Author(s):  
Iñigo Iribarren ◽  
Cristina Trujillo
Keyword(s):  
Asymmetric Catalysis ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Intermolecular Hydrogen Bond ◽  
Pair Interaction ◽  
Unsaturated Ketone ◽  
Asymmetric Transformations ◽  
The Past ◽  
Non Covalent Interactions ◽  
Covalent Interactions

<p>A wide variety of asymmetric transformations catalysed by chiral catalysts have been developed for the synthesis of valuable organic compounds in the past several decades. Within asymmetric catalysis field, phase-transfer catalysis has been recognized as a powerful method for establishing useful procedures for organic synthesis. In the present study intermolecular interactions between a well-known alkaloid quinine-derived phase transfer catalyst and four different anions were characterised, analysing the competition between the pure ion-pair interaction and the intermolecular hydrogen bond established upon complexation. Finally, the energy profile corresponding to the enantioselective conjugate cyanation of a a,b-unsaturated ketone, under the presence of two different catalysts were performed.</p>

EDITORIAL: Migration and competitiveness: Japan and the United States

2013 ◽  
Vol 10 (2) ◽  
pp. 115-124
Author(s):  
Philip L. Martin
Keyword(s):  
United States ◽  
The United States ◽  
Variable Cost ◽  
Fixed Cost ◽  
Special Issue ◽  
Science And Engineering ◽  
The Past ◽  
Past Half Century ◽  
Key Sectors ◽  
Past Half

Japan and the United States, the world’s largest economies for most of the past half century, have very different immigration policies. Japan is the G7 economy most closed to immigrants, while the United States is the large economy most open to immigrants. Both Japan and the United States are debating how immigrants are and can con-tribute to the competitiveness of their economies in the 21st centuries. The papers in this special issue review the employment of and impacts of immigrants in some of the key sectors of the Japanese and US economies, including agriculture, health care, science and engineering, and construction and manufacturing. For example, in Japanese agriculture migrant trainees are a fixed cost to farmers during the three years they are in Japan, while US farmers who hire mostly unauthorized migrants hire and lay off workers as needed, making labour a variable cost.

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