problem set 6 - Chemistry 312 Problem Set 6 (due Monday,...

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Chemistry 312 Problem Set 6 (due Monday, August 15) 1. a. Give the ground-state ligand-field electronic configuration for the populated valence molecular orbitals of the octahedral complex W(CO) 6 (no Jahn-Teller distortion). b. What is the term symbol (= term and multiplicity) for W in this state? c. Is the complex diamagnetic or paramagnetic? d. The first electronic absorption band occurs at about 31,000 cm –1 . Assign this band to an electronic transition in the complex. e. Calculate the wavelength (in nm) and the energy of this absorption (in kJ/mol). f. Is the photochemical dissociation of W(CO) 6 to W(CO) 5 + CO reasonable? Explain, in terms of the population of bonding and antibonding orbitals. 2. Ni(P(o-C 6 H 4 Me) 3 ) 2 Cl 2 is paramagnetic with a μ 3 BM, while Ni(PMe 3 ) 2 Cl 2 is diamagnetic (see the structures – note you are considering only the geometry of the metal d orbitals, so the metal d orbitals will split into either a square planar or a tetrahedral arrangement). Suggest a possible explanation, and show how it is compatible with their
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This note was uploaded on 01/19/2012 for the course CHEM 312 taught by Professor Staff during the Summer '08 term at University of Washington.

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problem set 6 - Chemistry 312 Problem Set 6 (due Monday,...

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