Lattice Energy


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lattice energy

[′lad·əs ‚en·ər·jē]
(solid-state physics)
The energy required to separate ions in an ionic crystal an infinite distance from each other.

Energy, Lattice

 

the work required to separate the particles forming a crystal lattice an infinite distance from each other. Lattice energy is a specific case of binding energy. It depends on the nature of the particles (molecules, atoms, ions) that make up the crystal lattice and on the nature of the interaction between them. Its value ranges from 10 to 4,000 kilojoules/mole and may be determined indirectly by given calorimetric measurements (seeTHERMOCHEMISTRY) and other methods.

Lattice energy also depends on the initial energy of the particles forming the crystal lattice, sometimes referred to as the dependence of lattice energy on temperature. The lattice energy is usually considered when a substance is in the standard state or at 0°K. It largely determines the strength of the bond between the particles in a crystal, as well as the physical properties of the crystal, such as strength, hardness, and melting point.

REFERENCE

Bokii, G. B. Kristallokhimiia, 3rd ed. Moscow, 1971.
References in periodicals archive ?
29 September 2017 - Australian integrated energy company Origin Energy (ASX: ORG) has entered into an agreement to sell its conventional upstream oil and gas business, Lattice Energy, to Beach Energy (Beach) for AUD 1.585m (USD 1.24bn), the company said.
As part of the sale, Origin has secured access to a significant portion of Lattice Energy's future east coast gas production under long-term gas supply agreements to support its domestic gas business.
As part of the sale, Origin has entered into agreements with Lattice Energy to secure access to long-term gas supply.
1On 2017 levels, excluding Lattice Energy which is being divested.
During the quarter, Origin entered into an agreement to sell its conventional upstream oil and gas business, Lattice Energy, to Beach Energy for $1,585 million.
Origin CEO Frank Calabria said, We reached another major milestone during the quarter announcing the sale of Lattice Energy, which delivers on our commitment to simplify our business and reduce debt.
Origin Energy Limited (Origin) today announced it has entered into an agreement with Benaris1 to enable Lattice Energy to acquire Benaris' 27.77 per cent interest in the Otway Gas Project Joint Venture.
Origin has the right to acquire the assets, although has no obligation to do so if the divestment of Lattice Energy does not proceed.
The alignment of interests in the joint venture and the simplification of the ownership structure is consistent with Origins preparations to divest Lattice Energy. These transactions, once completed, will help facilitate the future development of the joint ventures.
Origin also expects an impairment charge of $357 million (post tax) for Lattice Energy, its conventional gas assets currently held for sale.