HW 1 - b) [ReHq]2-c) RhCl(PPhr)r d) [Cr(NHi)rCl]* e)...

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Homework #1 Chemistry 342 Due: Friday January 2f1,2011 at the beginning of class Note: Please show all your work. We cannot give partial credit otherwise. 1. Determine the number of valence d electrons for each of the following ions: a) Sc(IIf o d) Zn'" 3 b) Cr3* e) Mn(VII) o c) Ni(ID 0 Fe(III) d) BH (when bound to 2 metals) h) Bipyridine 2. In order to determine the number of valence electrons around a metal atom in a metal complex (as in problem 3), the number of electrons donated by each ligand must first be ascertained. State how many electrons are donated to a single metal center by each of the following ligands: a) HzO e) Br- b) co 0H' c) CN- e) PPhr 3. For each of the following complexes: (A) determine the oxidation state of the metal and (B) drarv the molecule with the correct coordination geometry. a) [Pt(NHg):Ch]*
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Unformatted text preview: b) [ReHq]2-c) RhCl(PPhr)r d) [Cr(NHi)rCl]* e) ,Fe(CO)+Iz 0 Ni(Co)rpy g) [AuBr2(N$r)21* h) [Ni(cN)4]-i) [Co(NHr)o]3* j) w(cok b) PF5 d) BF3 4. For each of the following compounds, A) Determine the oxidation state of the metal ion. Bi Determine how many valence d electrons are on the metal center, not including the electrons donated from the ligands. C) Show the total valence electrons at the metal center from the metal and the ligands, combined. Do these complexes conform to the l8-electron rule? **(Note: Either the ionic of covalent method may be used to determine the total number of valence electrons around the metal center. Please state which method has been used.)** 't *******'r{.********{.{.{.****,t{.ShOW allWOfk!!*****:F*{'*'******'!r**'ttr'**'&*'*:&{<...
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