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Examples oflone pair
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Lonepairbond pair repulsions change the bond angle from the tetrahedral angle to a slightly lower value.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The main requirement is that aside from thelonepair, the other three substituents differ mutually.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Alonepairof electrons resides on the sulfur atom giving it tetrahedral molecular geometry as for sp carbon.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In contrast, boron trifluoride is flat, adopting a trigonal planar geometry because the boron does not have alonepairof electrons.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Consequently, there is nolonepairnear the acid group to stabilize the molecule.
From theCambridge English Corpus
It occurs when a molecule has a steric number of 5, with the central atom being bonded to 4 other atoms and 1lonepair.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Nevertheless, thelonepairof the nitrogen, responsible of the zwitterionic structure, stabilizes the structure and is responsible of the linearity of isocyanides.
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This example is from Wikipedia and may be reused under a CC BY-SA license.This transition state can be stabilized through induction or delocalization of the electronlonepairthrough resonance.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The s-orbitallonepaircan be hybridised with the p-orbital bond.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Thelonepairof electrons present on the oxygen or sulphur attack the electropositive carbonyl carbon.
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This example is from Wikipedia and may be reused under a CC BY-SA license.When this occurs, the pi-bond of the electrophile is converted into alonepairon the oxygen.
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This example is from Wikipedia and may be reused under a CC BY-SA license.When this occurs, the pi-bond of the amide is converted into alonepair, creating a negatively charged oxygen.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In non-basic aromatic rings thelonepairof electrons of the nitrogen atom is delocalized and contributes to the aromatic pi electron system.
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This example is from Wikipedia and may be reused under a CC BY-SA license.It contains six pi electrons: four from two double bonds and two from a nitrogenlonepair.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Whereas thelonepairon nitrogen is delocalized in pyrrole, thelonepairon phosphorus atom in the phosphorus equivalent of pyrrole (phosphole) is not.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The molecule can adsorbed to the surface through either of the sulfur's twolonepair.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The synthesis of the axial diastereomer is rationalized via the 1,3-anomeric effect which reduces the nucleophilicity of the equatoriallonepair.
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This example is from Wikipedia and may be reused under a CC BY-SA license.A hydrogen bond results when this strong positive charge density attracts alonepairof electrons on another heteroatom, which becomes the hydrogen-bond "acceptor".
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This example is from Wikipedia and may be reused under a CC BY-SA license.For example, bases donating alonepairfrom an oxygen atom are harder than bases donating through a nitrogen atom.
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This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
- dragonfly
- dragon fruit
- dragon-fruit
- dragon head
- dragon head
- dragoon
- dragoon-into
- dragoon sb into sth
- dragoon-sb-into-sth
- dragoon someone into something
- drag-out
- drag-out-of
- drag queen
- drag-queen
- drag race
- drag-race
- drag racing
- drag-racing
- drag sb away
- drag-sb-away
- drag sb down
- drag-sb-down
- drag sb into sth
- drag-sb-into-sth
- drag sb's name through the mire/mud