Bio‐organometallic Approaches to Nitrogen Fixation Chemistry

Abstract

This chapter contains sections titled: Introduction – The N2 Fixation Challenge Biological N2 Reduction General Comments Structural Data Assigning the FeMoco Oxidation States Biomimetic Systems that Model Structure and Function General Comments Mononuclear Molybdenum Systems of Biomimetic Interest The Originally Proposed “Chatt Cycle” An Electrocatalytic Reduction Cycle using Low-valent Tungsten A Mo(III)-mediated Catalytic N2 Reduction System A Cp*MMe3(N2) Model System (M = Mo, W) Bimetallic Molybdenum Systems that Cleave N2 Sulfur-supported Mo-N2 Complexes Considering Mechanisms Involving Multiple and Single Iron Sites for N2 Reduction General Comments Theoretical Studies that Invoke Iron-mediated Mechanisms Comparing Several Proposed Mechanisms Synthetic Efforts to Model N2 Reduction by Multiple Iron Sites Nitrogenase-related Transformations at Cluster Models Considering N2 Fixation Involving a Scheme Single Iron Site Model Studies that May be Relevant to N2 Fixation Involving a Single Iron Site Fe(0)-N2 Complexes and NH3 versus N2H4 Production Low-coordinate Iron Model Systems Concluding Remarks