What are cage complexes?
What are cage complexes?
Coordination cages are three-dimensional ordered structures in solution that act as hosts in host–guest chemistry. The inclusion complexes of a guest inside a coordination cage show intriguing chemistry as well; often, the properties of the cage will change depending on the guest.
What are cage compounds give its properties?
Cage compounds are characterized by three-dimensional structures which have defined rigid geometry and as such, they are very useful synthons in organic synthesis, as well as the indispensable substrates for the mechanistic studies.
What is chemical cage?
The cage effect in chemistry describes how the properties of a molecule are affected by its surroundings. In order to interact with other molecules, the caged particle must diffuse from its solvent cage. The typical lifetime of a solvent cage is 10−11s.
What is metal organic cages?
Introduction. Metal-organic cages (MOCs) are self-assembled structures derived from carefully selected combinations of metal ions and ligands (Cook and Stang, 2015; Debata et al., 2019; Pilgrim and Champness, 2020).
What is caged metal?
A cage is a structure of wire or metal bars in which birds or animals are kept.
What is clathrate compound in chemistry?
A clathrate is a chemical substance consisting of a lattice that traps or contains molecules. Traditionally, clathrate compounds are polymeric and completely envelop the guest molecule, but in modern usage clathrates also include host–guest complexes and inclusion compounds.
Which molecule has cage-like structure?
All three are allotropes of Carbon. But Diamond and Graphite have layered structures. Buckminsterfullerene has hexagonal and pentagonal rings. These rings attach to itself and form a cage-like structure or soccer like structure.
What is a metal cage used for?
Metal cages are used mainly to transport materials, goods, or equipment without the need to load and unload what is being carried. This saves a lot of time and considerably lowers the chances of damage. Stillages or metal cages come in a wide variety of designs and sizes and is usually made from steel or iron.
Why is clathrates called cage compound?
The word clathrate is derived from the Latin clathratus (clatratus), meaning ‘with bars, latticed’. According to IUPAC, clathrates are inclusion compounds “in which the guest molecule is in a cage formed by the host molecule or by a lattice of host molecules.”
What are clathrate compounds give an example?
clathrate A compound in which molecules of one substance, commonly a noble gas, are completely enclosed within the crystal structure of another substance. Typical examples are Kr and Xe encapsulated in zeolite structures, or Ar, Kr, and Xe trapped in water ice.
Which allotrope of carbon has cage like structure?
The Allotrope of carbon BUCKMINSTERFULLERENE has a cage like structure. The C60 allotrope was named buckminsterfullerene in recognition of the US architect Buckminster Fuller who designed geodesic dome with similar structure.It Is also called buckyball, footballene and soccerballene.
Does ice has open cage like structure?
In ice (solid state), a water molecule is associated with four other water molecules through hydrogen bonding in a tetrahedral manner. This gives rise to open cage-like structure which prevents the close packing of molecules (lower density).
Which is an example of a cage complex?
The inability for the metal ion to get out of the cage complex also means that it is unable to get into it. As such, cage complexes often have to be assembled around the metal centre in situ. There are many examples in cage complexes, for example metals can become encapsulated within a fullerene.
What is the role of metal ion in cobalt cage complex?
The metal ion in this synthesis stabilises the intermediate against imine hydrolysis because nitrogen’s lone pair is datively bonded to cobalt. A final role of the metal ion in this mechanism is that it activates the intermediate imines towards nucleophilic attack.
What happens when a compound is trapped in a cage complex?
When it is trapped in a cage complex, it becomes inert to substitution, simply because it cannot escape from the rest of the compound. This property if the cage complex is explored further in this experiment.