Octahedral Complex: oxidation state, isomers and CFSE
Not what you're looking for?
1. Determine is the oxidation state of the metal in each of the following complexes. Draw ALL linkage isomers and stereoisomers for each complex CLEARLY showing enantiomers. Where possible, label each isomer as cis, trans, fac, mer, and/or . You must properly use shorthand notation for multidentate ligands. Note: do not consider the chirality of ligands and not all isomers can be labeled.
a) K2[Cr(ox)2(NH3)(H2O)]
b) [Rh(en)3]Cl3
c) [WCl4F(OH)]
d) NH4[Ni(CN)3(NH3)BrCl]
e) [Co(en)(ox)(CO)(H2O)]
f) Na2[PtCl2(NO2)2] (square planar)
g) [FeCl2(CO)2(NH3)2](NO3)2
2. For each series of octahedral complexes, predict which will have the largest and which will have the smallest value for . Briefly explain your answers. (Do not compare actual experimental values).
a) [Fe(H2O)6]3+ [Fe(ox)3]3- [Fe(CN)6]3- [Fe(NO2)6]3-
b) [Cr(SCN)6]3- [Cr(NH3)6]2+ [Cr(NH3)6]3+ [Cr(SCN)6]4-
c) [Ir(H2O)6]3+ [Rh(H2O)6]3+ [Co(H2O)6]2+ [Co(H2O)6]3+
d) [MoCl6]3- [MoF6]3- [MoCl6]2- [MoF6]2-
e) [V(en)3]4+ [Nb(en)3]4+ [V(CN)6]3- [Nb(CN)6]3-
Purchase this Solution
Solution Summary
This solution offers one worked out example only for each of the questions, so that the student can follow the logical approach and work out the rest of the examples similarly.
Solution Preview
As you have several examples in each question, I will only work out one from each question, the rest can be done similarly.
1. Determine is the oxidation state of the metal in each of the following complexes. Draw ALL linkage isomers and stereoisomers for each complex CLEARLY showing enantiomers. Where possible, label each isomer as cis, trans, fac, mer, and/or . You must properly use shorthand notation for multidentate ligands. Note: do not consider the chirality of ligands and not all isomers can be labeled.
a) K2[Cr(ox)2(NH3)(H2O)]
While calculating oxidation state in a transition metal complex, pay attention to the ligands first. Oxalate ligand (ox) has a charge of -2. Ammonia (NH3) is neutral. Water (H2O) is neutral. Now take a look at the overall charge of the complex. As potassium (K) has a ...
Education
- BSc (Hons),
- MSc,
- PhD,
Recent Feedback
- "Thankyou for the feedback. I have a few question though; With the first statistic about cost below... “According to Sigma-Aldrich catalog, cost of 1L octane is AUD $ 392.00, whereas the cost of 1L ethanol is AUD $196.00. Moreover, if ethanol is obtained from sugar industry as a by-product, it may cost even less. Source of oxygen is ambient atmosphere, so it costs nothing. So ethanol is much cheaper than petrol, in fact it is half-priced: AUD $ (392-196) = $ 196.” I didn't think it made sense because the cost of petrol per litre is normally a dollar something or even less than a dollar not a couple of hundred of dollars. For example, a statistic that I found in america was: "U.S. ethanol production costs are about $1.20 per gallon of ethanol, or $1.82 per gallon on a gasoline-equivalent basis." However, I was wondering whether you could find an Australian statistic. Also, you mentioned that H20 is not a greenhouse gas. However, in the combustion equations it is actually carbon dioxide and water vapour which are produced and they are both greenhouse gases. Finally, how do I calculate the energy efficiency of ethanol and petrol? "
- "Thank you!"
- "Didnt really answer my questions but gave me a start at least."
- "Once again this is tremendous help I can't thank you enough for not only working the problem but explaining in detail how and why!! KR"
- "Awesome thank you so much for the help!!!"
Purchase this Solution
Free BrainMass Quizzes
General Chemistry - Classification of Matter
This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.
Functional groups in Organic Chemistry
You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.
Organic Chemistry Naming: Alkanes
This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.
Match Elements with their Symbols
Elements are provided: choose the matching one- or two-letter symbol for each element.