Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Pi_bond> ?p ?o }
- Pi_bond abstract "In chemistry, pi bonds (π bonds) are covalent chemical bonds where two lobes of one involved atomic orbital overlap two lobes of the other involved atomic orbital. Each of these atomic orbitals is zero at a shared nodal plane, passing through the two bonded nuclei. The same plane is also a nodal plane for the molecular orbital of the pi bond.The Greek letter π in their name refers to p orbitals, since the orbital symmetry of the pi bond is the same as that of the p orbital when seen down the bond axis. P orbitals often engage in this sort of bonding. D orbitals also engage in pi bonding, and form part of the basis for metal-metal multiple bonding.Pi bonds are usually weaker than sigma bonds; the C-C double bond has a bond energy less than twice the C-C single bond bond energy; which leads to the conclusion that the p orbital overlap to form molecular orbitals is a weaker bond than when s orbitals overlap to form molecular orbitals. From the perspective of quantum mechanics, this bond's weakness is explained by significantly less overlap between the component p-orbitals due to their parallel orientation. This is contrasted by sigma bonds which form bonding orbitals directly between the nuclei of the bonding atoms, resulting in greater overlap and a strong sigma bond.Pi bonds result from overlap of atomic orbitals that are in contact through two areas of overlap. Pi-bonds are more diffuse bonds than the sigma bonds. Electrons in pi bonds are sometimes referred to as pi electrons. Molecular fragments joined by a pi bond cannot rotate about that bond without breaking the pi bond, because rotation involves destroying the parallel orientation of the constituent p orbitals.For homonuclear diatomic molecules, bonding π molecular orbitals have only the one nodal plane passing through the bonded atoms, and no nodal planes between the bonded atoms. The corresponding antibonding, or π* ("pi-star") molecular orbital, is defined by the presence of an additional nodal plane between these two bonded atoms.".
- Pi_bond thumbnail Electron_orbitals.svg?width=300.
- Pi_bond wikiPageID "589286".
- Pi_bond wikiPageLength "5879".
- Pi_bond wikiPageOutDegree "48".
- Pi_bond wikiPageRevisionID "682568407".
- Pi_bond wikiPageWikiLink Acetylene.
- Pi_bond wikiPageWikiLink Alkene.
- Pi_bond wikiPageWikiLink Alkyne.
- Pi_bond wikiPageWikiLink Antibond.
- Pi_bond wikiPageWikiLink Antibonding_molecular_orbital.
- Pi_bond wikiPageWikiLink Aromatic_interaction.
- Pi_bond wikiPageWikiLink Atomic_nucleus.
- Pi_bond wikiPageWikiLink Atomic_orbital.
- Pi_bond wikiPageWikiLink Bond_length.
- Pi_bond wikiPageWikiLink Category:Chemical_bonding.
- Pi_bond wikiPageWikiLink Chemical_bond.
- Pi_bond wikiPageWikiLink Chemistry.
- Pi_bond wikiPageWikiLink Coordination_complex.
- Pi_bond wikiPageWikiLink Covalent_bond.
- Pi_bond wikiPageWikiLink Delta_bond.
- Pi_bond wikiPageWikiLink Diatomic_carbon.
- Pi_bond wikiPageWikiLink Diatomic_molecule.
- Pi_bond wikiPageWikiLink Diborane(2).
- Pi_bond wikiPageWikiLink Dicarbon.
- Pi_bond wikiPageWikiLink Double_bond.
- Pi_bond wikiPageWikiLink Ethane.
- Pi_bond wikiPageWikiLink Ethylene.
- Pi_bond wikiPageWikiLink Homonuclear_molecule.
- Pi_bond wikiPageWikiLink Metal_complex.
- Pi_bond wikiPageWikiLink Molecular_geometry.
- Pi_bond wikiPageWikiLink Molecular_orbital.
- Pi_bond wikiPageWikiLink Node_(physics).
- Pi_bond wikiPageWikiLink Orbital_overlap.
- Pi_bond wikiPageWikiLink P_orbital.
- Pi_bond wikiPageWikiLink Pi_backbonding.
- Pi_bond wikiPageWikiLink Pi_interaction.
- Pi_bond wikiPageWikiLink Picometer.
- Pi_bond wikiPageWikiLink Picometre.
- Pi_bond wikiPageWikiLink Quadruple_bond.
- Pi_bond wikiPageWikiLink Quantum_mechanics.
- Pi_bond wikiPageWikiLink Quintuple_bond.
- Pi_bond wikiPageWikiLink Sigma_bond.
- Pi_bond wikiPageWikiLink Stacking_(chemistry).
- Pi_bond wikiPageWikiLink Transition_metal.
- Pi_bond wikiPageWikiLink Triple_bond.
- Pi_bond wikiPageWikiLink File:Acetylene-CRC-IR-dimensions-2D.png.
- Pi_bond wikiPageWikiLink File:Electron_orbitals.svg.
- Pi_bond wikiPageWikiLink File:Ethane-staggered-CRC-MW-dimensions-2D.png.
- Pi_bond wikiPageWikiLink File:Ethylene-CRC-MW-dimensions-2D.png.
- Pi_bond wikiPageWikiLink File:Pi-Bond.svg.
- Pi_bond wikiPageWikiLinkText "π electrons".
- Pi_bond wikiPageWikiLinkText "Pi bond".
- Pi_bond wikiPageWikiLinkText "pi bond".
- Pi_bond wikiPageWikiLinkText "pi cloud".
- Pi_bond wikiPageWikiLinkText "pi electrons".
- Pi_bond wikiPageWikiLinkText "pi orbitals".
- Pi_bond wikiPageWikiLinkText "pi system linkage".
- Pi_bond wikiPageWikiLinkText "pi".
- Pi_bond wikiPageWikiLinkText "pi-bonding".
- Pi_bond wikiPageWikiLinkText "π (pi) bond".
- Pi_bond wikiPageWikiLinkText "π bond".
- Pi_bond wikiPageWikiLinkText "π bonding".
- Pi_bond wikiPageWikiLinkText "π bonds".
- Pi_bond wikiPageWikiLinkText "π electron".
- Pi_bond wikiPageWikiLinkText "π electrons".
- Pi_bond wikiPageWikiLinkText "π orbital".
- Pi_bond wikiPageWikiLinkText "π orbitals".
- Pi_bond wikiPageWikiLinkText "π resonance".
- Pi_bond wikiPageWikiLinkText "π systems".
- Pi_bond wikiPageWikiLinkText "π".
- Pi_bond wikiPageWikiLinkText "π* orbital".
- Pi_bond wikiPageWikiLinkText "π-bond".
- Pi_bond wikiPageWikiLinkText "π-bonded".
- Pi_bond wikiPageWikiLinkText "π-bonding".
- Pi_bond wikiPageWikiLinkText "π-bonds".
- Pi_bond wikiPageWikiLinkText "π-electron".
- Pi_bond wikiPageWikiLinkText "π-electrons".
- Pi_bond wikiPageWikiLinkText "π-orbital".
- Pi_bond wikiPageWikiLinkText "π-orbitals".
- Pi_bond wikiPageWikiLinkText "π-system".
- Pi_bond wikiPageWikiLinkText "π-systems".
- Pi_bond hasPhotoCollection Pi_bond.
- Pi_bond wikiPageUsesTemplate Template:Chemical_bonds.
- Pi_bond wikiPageUsesTemplate Template:Refimprove.
- Pi_bond wikiPageUsesTemplate Template:Reflist.
- Pi_bond subject Category:Chemical_bonding.
- Pi_bond hypernym Bonds.
- Pi_bond type Article.
- Pi_bond type Article.
- Pi_bond comment "In chemistry, pi bonds (π bonds) are covalent chemical bonds where two lobes of one involved atomic orbital overlap two lobes of the other involved atomic orbital. Each of these atomic orbitals is zero at a shared nodal plane, passing through the two bonded nuclei.".
- Pi_bond label "Pi bond".
- Pi_bond sameAs رابطة_باي.
- Pi_bond sameAs Enllaç_pi.
- Pi_bond sameAs Π-Bindung.
- Pi_bond sameAs Δεσμός_π.
- Pi_bond sameAs Enlace_π.
- Pi_bond sameAs پیوند_پای.
- Pi_bond sameAs Piisidos.
- Pi_bond sameAs Liaison_π.