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Trigonal prismatic molecular geometry : ウィキペディア英語版 | Trigonal prismatic molecular geometry
In chemistry, the trigonal prismatic molecular geometry describes the shape of compounds where six atoms, groups of atoms, or ligands are arranged around a central atom, defining the vertices of a triangular prism. ==Examples== Hexamethyltungsten (W(CH3)6) was the first example of a molecular trigonal prismatic complex.〔Housecroft C.E. and Sharpe A.G., ''Inorganic Chemistry'' (2nd ed., Pearson Prentice-Hall 2005) p.725 ISBN 0130-39913-2〕 Some other transition metals have trigonal prismatic hexagonal complexes, including both neutral molecules such as Mo(CH3)6 and Re(CH3)6 and ions such as Ta(CH3)6− and Zr(CH3)62−.〔Housecroft and Sharpe p.545〕 The complex Mo(S−CH=CH−S)3 is also trigonal prismatic, with each S−CH=CH−S group acting as a bidentate ligand with two sulfur atoms binding the metal atom.〔 Here the coordination geometry of the six sulfurs around the molybdenum is similar to that in the extended structure of molybdenum disulfide. (MoS2)
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