Multiple Bonds

Multiple Bonds

 

a type of chemical bond formed by two or three electron pairs that are common to two directly bonded atoms, such as in ethylene H2C=CH2, formaldehyde H2C=O, acetylene HC=CH, and hydrogen cyanide H—C=N.

References in periodicals archive ?
Multiple bonds have an enourmous impact on our lives as they are extremely useful functionalities in important industrial chemical transformations and products.
These studies detailed failure of specimens with multiple bonds, whereas this study confirmed the importance of fiber orientation on the load of an individual bond.
Some insurers have sponsored multiple bonds. USAA, for instance, has sponsored dozens of catastrophe bonds through the years to spread its risks from natural disasters in different indemnity layers.
Nigeria, Senegal, and CAaAaAeA te d'Ivoire, to name a few, sold multiple bonds on t international capital markets in 2017.
The researchers have reported the first examples of thorium--a radioactive actinide metal--forming multiple bonds to arsenic at ambient temperatures.
The Foreign Office said relationship of Pakistan with Saudi Arabia was special by virtue of multiple bonds of religious affinity, culture and the 2.6 million strong diaspora that bind them together.
Shaheen demanded that the Lebanese authorities take diplomatic measures to avoid what he described as a "growing crisis." "According to the statistics of the Central Bank of Lebanon, from 1975 to 2015, the country received more than $50 billion in the form of direct and indirect aid, in addition to multiple bonds," he said.
But the answer he gave Castleberry to Underwood's other question was convoluted: "Oftentimes, there are multiple bonds issued by the same issuer in the same series that are divided amongst buyers," Lewis wrote in the April 7, 2009, email to Castleberry.
Homogeneous catalysis, characterization methods, and M-L multiple bonds are covered, finishing off with several chapters on applications and novel research in organic synthesis, energy chemistry, clusters and nanoparticles, paramagnetic and high oxidation-state complexes, and bioorganometallic chemistry.
Key statement: The invention relates to the use of polyorganosiloxanes having 3 or more siloxane units, which have one or more organic fractions R1, where R1 has one or more carbon-carbon multiple bonds and at least 4 carbon atoms, and wherein the presence of hydrocarbon fractions having a chain length of 5 to 50 carbon atoms is excluded, as additives in the processing of rubber.
(2005) In Organosilicon Chemistry VI-From Molecules to Materials: New molecular systems with silicon-silicon multiple bonds (eds.
Another factor is that as investors build up their cat-bond portfolios, they fear a single event causing loss to multiple bonds in their portfolio, Lalonde said.

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