Chemical bonding – Page 4
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ResearchNew silicon–silicon bond is a rare example of a π bond without a σ bond
Discovery made in silicon analogue of bicyclobutane
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ResearchHydrogen bonds are single atom nickel’s secret for carbon dioxide reduction
Computational calculations show that hydrogen atoms and charge capacity are behind nickel’s high activity and selectivity in electrochemical carbon dioxide reduction
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ResearchNew type of bond is the first to defy actinide contraction trend
Bonds discovered in metallacycles are unique to the 5f elements
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![An image showing a [2]catenane](https://d2cbg94ubxgsnp.cloudfront.net/Pictures/100x67/0/0/4/504004_fja0c01757_0007.jpeg_49119.jpg)
ResearchMechanical protecting group shields molecules from stress and strain
Catenane makes force-activated molecules more resistant mechanical bond breaking
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![An image showing the bonding pattern of [2]catenane](https://d2cbg94ubxgsnp.cloudfront.net/Pictures/100x67/2/8/7/503287_c9cc09483kf2_286914.png)
ResearchAromaticity lends stability to carbon-only catenanes
Catenanes of newly discovered C18 rings are theoretically possible thanks to the kinetic quirks of aromaticity
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ResearchRhenium plays starring role in bond movie
Controllable energy input from transmission electron microscope captures atoms dissociating and recombining
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ResearchOdd 'entropic bonds' akin to chemical ones can form between nanoparticles
Simulations finds that ’bonding’ can occur in the absence of any electronic interaction
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OpinionWill computers ever discover drugs from scratch?
With enough understanding and computing power, it should be possible, but will it happen?
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ResearchThree centres, two electrons, but how many bonds?
Tweaking Lewis structures allows for a simplified and clearer representation of electron-deficient molecules
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ResearchCarbynes expand the possibilities of carbon–carbon double bonds
Chemists use novel monovalent carbon species to insert functionalities in the middle of double bonds
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ResearchGiant tree molecule made out of 45 rotaxanes switches size on demand
Mechanically interlocked molecules give dendrimer the ability to expand and contract
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ResearchFirst ever synthesis of most double-bond-rich hydrocarbon
Tiny hydrocarbon with six double bonds has unrivalled ability to make complex ring systems though multiple Diels–Alder reactions
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ResearchFirst molecular knots made from just benzene rings
Catenane and trefoil knot are the first mechanically interlocked molecules made from only carbon and hydrogen
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OpinionDo you know about C–H‧‧‧O?
The C–H‧‧‧O hydrogen bond controversy has long been resolved – we should tell our students
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FeatureThe forgotten female crystallographer who discovered C–H⋯O bonds
Andy Extance tells the overlooked story of crystallographer June Sutor, whose C–H⋯O bonding hypothesis was unjustly suppressed
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OpinionThe third degree on actinide covalency
The often ignored elements are attracting chemists’ attention again
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ResearchStudy ranks interactions between hydrogen-bond acceptors and cations
Experiments establish a set of parameters that will help scientists predict the free energies of the interaction between cations and hydrogen-bond acceptors in any solvent with good reliability
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ResearchBond order through a molecular orbital lens
Study computes diatomic bond orders across the periodic table and reveals new bonding insights