One of the more famous species in coordination chemistry is the Creutz-Taube complex: 5+ (NH3);RuN NRu(NH3)5 It is named for the two scientists who discovered it and ini- tially studied its properties. The central ligand is pyrazine, a planar six-membered ring with nitrogens at opposite sides. (a) How can you account for the fact that the com- plex, which has only neutral ligands, has an odd overall charge? (b) The metal is in a low-spin configuration in both cases. Assuming octahedral coordination, draw the d-orbital energy-level diagram for each metal. (c) In many experiments the two metal ions appear to be in exactly equivalent states. Can you think of a reason that this might appear to be so, recognizing that electrons move very rap- idly compared to nuclel?

One of the more famous species in coordination chemistry is the Creutz-Taube complex: 5+ (NH3);RuN NRu(NH3)5 It is named for the two scientists who discovered it and ini- tially studied its properties. The central ligand is pyrazine, a planar six-membered ring with nitrogens at opposite sides. (a) How can you account for the fact that the com- plex, which has only neutral ligands, has an odd overall charge? (b) The metal is in a low-spin configuration in both cases. Assuming octahedral coordination, draw the d-orbital energy-level diagram for each metal. (c) In many experiments the two metal ions appear to be in exactly equivalent states. Can you think of a reason that this might appear to be so, recognizing that electrons move very rap- idly compared to nuclel?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

One of the more famous species in coordination chemistry
is the Creutz-Taube complex:
5+
(NH3);RuN
NRu(NH3)5
It is named for the two scientists who discovered it and ini-
tially studied its properties. The central ligand is pyrazine,
a planar six-membered ring with nitrogens at opposite
sides. (a) How can you account for the fact that the com-
plex, which has only neutral ligands, has an odd overall
charge? (b) The metal is in a low-spin configuration in
both cases. Assuming octahedral coordination, draw the
d-orbital energy-level diagram for each metal. (c) In many
experiments the two metal ions appear to be in exactly
equivalent states. Can you think of a reason that this might
appear to be so, recognizing that electrons move very rap-
idly compared to nuclel?

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