Konsep Proses Pemesinan Berkelanjutan

Metal industrial machining usually strongth pressure from all sectors, ether raw material industries or user metal industries. Manufacturint process which offered to all sectors industries or companies that sustainable manufakturing consist of three main factor are efective cost, enviroment and social performance

Stable Tetraaryldiphosphine Radical Cation and Dication

Salts containing tetraaryldiphosphine radical cation <b>1</b>^<b>•+</b> and dication <b>1</b>^<b>2+</b> have been isolated and structurally characterized. Radical <b>1</b>^<b>•+</b> has a relaxed pyramidal geometry, while dication <b>1</b>^<b>2+</b> prefers a planar, olefin-like geometry with a two-electron π bond. The alteration of the geometries of the tetraaryldiphosphine upon oxidation is rationalized by the nature of the bonding. The EPR spectrum showed that the spin density of radical <b>1^•+</b> is mainly localized on phosphorus atoms, which is supported by theoretical calculation

Stable Tetraaryldiphosphine Radical Cation and Dication

Salts containing tetraaryldiphosphine radical cation <b>1</b>^<b>•+</b> and dication <b>1</b>^<b>2+</b> have been isolated and structurally characterized. Radical <b>1</b>^<b>•+</b> has a relaxed pyramidal geometry, while dication <b>1</b>^<b>2+</b> prefers a planar, olefin-like geometry with a two-electron π bond. The alteration of the geometries of the tetraaryldiphosphine upon oxidation is rationalized by the nature of the bonding. The EPR spectrum showed that the spin density of radical <b>1^•+</b> is mainly localized on phosphorus atoms, which is supported by theoretical calculation