Results 121 to 130 of about 631,257 (354)

Steric Restraints in Redox‐Active Guanidine Ligands and Their Impact on Coordination Chemistry

open access: yesChemistry – A European Journal, EarlyView.
One carbon makes the difference; a diguandine with an ethylene bridge does not coordinate metals, while a diguanidine with a propylene bridge coordinates to a variety of metals. In this work, we report the synthesis and coordination chemistry of the first cyclic diguanidino‐benzene ligands and compare their coordination chemistry with that of open ...
Eliane Engels   +7 more
wiley   +1 more source

Proton Conductivities of Stepwise Protonated Imidazole‐Fused Tetraphenylene Derivatives

open access: yesChemistry – A European Journal, EarlyView.
Proton conducting tetraphenylene molecules (ImTP) containing a imidazole group were controlled by the degree of protonation. By controlling the degree of protonation from neutral ImTP to H1ImTP⁺, H2ImTP2⁺, and H4ImTP⁴⁺, we demonstrated that the balance between intermolecular hydrogen bonding and electrostatic interactions affects structural stability ...
Mu Li   +4 more
wiley   +1 more source

Saddle quantities and applications

open access: yesJournal of Differential Equations, 1989
AbstractIn this paper we make the connection between the theoretical study of the generalized homoclinic loop bifurcation (GHB∗) and the practical computational aspects. For this purpose we first compare the Dulac normal form with the Joyal normal form. These forms were both used to prove the GHB∗ theorem.
Pierre Joyal, Christiane Rousseau
openaire   +2 more sources

Tuning the Excited State Character of Amine/Carbonyl Thermally Activated Delayed Fluorescence Emitters with Ring Fusion

open access: yesChemistry – A European Journal, EarlyView.
Ring fusion in MR‐TADF emitters can affect the charge transfer excited state and therefore the photophysical properties. Here we investigate the effect of ring fusion in two structurally similar molecules to identify the advantages and disadvantages of this strategy.
Thomas Kalab   +3 more
wiley   +1 more source

Optimization and predictive modelling of biodiesel production from waste cooking oil catalyzed by blast furnace slag geopolymer using RSM and machine learning

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Biodiesel production from waste cooking oil (WCO) has emerged owing to growing interest in sustainable energy sources. Geopolymers synthesized from industrial wastes, such as blast furnace slag (BFS), are promising catalysts because of their environmental benefits and catalytic properties.
Pascal Mwenge   +3 more
wiley   +1 more source

Characteristics Comparison and Case Study of Traditional Anti-Slip Saddles and Innovative Rolling Saddles in Highway Long-Span Bridges

open access: yesApplied Sciences
The cable saddle structure is the main support component for long-span bridges to transmit cable force, which is of great significance for the structural force system.
Jun Wan, Gang Liu, Zhendong Qian
doaj   +1 more source

BICYCLE SADDLES. [PDF]

open access: green, 1899
John L. Short
openalex   +1 more source

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