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Let A = (a ij) be a 2n × 2n skew-symmetric matrix. The Pfaffian of A is explicitly defined by the formula =! = (), (), where S 2n is the symmetric group of degree 2n and sgn(σ) is the signature of σ.
Hexafluorophosphate is an anion with chemical formula of [PF 6] −. It is an octahedral species that imparts no color to its salts. [PF 6] − is isoelectronic with sulfur hexafluoride, SF 6, and the hexafluorosilicate dianion, [SiF 6] 2−, and hexafluoroantimonate [SbF 6] −. In this anion, phosphorus has a valence of 5.
Search. Search. Appearance. Donate; Create account; ... Properties Chemical formula. Na[PF 6] Molar mass: 167.95395 g/mol Hazards GHS labelling: [1]
Tetrakis(acetonitrile)copper(I) hexafluorophosphate is a salt with the formula [Cu(CH 3 CN) 4]PF 6. It is a colourless solid that is used in the synthesis of other copper complexes. The cation [Cu(CH 3 CN) 4] + is a well-known example of a transition metal nitrile complex. [1]
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In Germany, real estate appraisal is known as real estate valuation (Immobilienbewertung). Real estate appraisers (Immobilienbewerter or Gutachter) can qualify to become a Öffentlich bestellter und vereidigter Sachverständiger (officially appointed and sworn expert). However, this formerly very important title has lost a lot of its importance ...
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