Reactivity in Chemistry

Nitrogen Reduction

NF6. Solutions for Selected Problems

Problem NF1.1.

a)  0        b)  3-        c)  3-        d)  3+        e)  5+

Problem NF1.2.

a) O2        b) NO2-        c) 2 e-

Problem NF3.1.

a)  S:  4 x 2- = 8- ; Fe: 2 x 2+  +  2 x 3+ = 10+ ; total = 2+

b)  S:  4 x 2- = 8- ; Fe: 1 x 2+  +  2 x 3+ = 8+ ; total = 0

c)  S:  2 x 2- = 4- ; Fe: 2+  +   3+ = 5+ ; total = 1+

Problem NF3.2.

Problem NF3.3.

Problem NF3.4.

 

Problem NF4.1.

d)  As the Fe becomes more reduced, the N-N stretching frequency decreases.  That's because the more electron density there is on the  Fe, the more it is able to backbond to the N2 (N2 is a π acceptor).

This site is written and maintained by Chris P. Schaller, Ph.D., College of Saint Benedict / Saint John's University (with contributions from other authors as noted).  It is freely available for educational use.

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Structure & Reactivity in Organic, Biological and Inorganic Chemistry by Chris Schaller is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License

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This material is based upon work supported by the National Science Foundation under Grant No. 1043566.

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