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Abstract
An extremely bulky xanthene bridged diamide ligand (TCHPNON = 4,5-bis(2,4,6-tricyclohexylanilido)-2,7-diethyl-9,9-dimethyl-xanthene) has been developed and used to prepare two monomeric diamido-calcium complexes [(TCHPNON)Ca(D)n] (D = THF, n = 2, 3; D = toluene, n = 1, 4). Reduction of 4 with 5% w/w K/KI under an N2 atmosphere gave the first well-defined, anionic s-block complex of activated dinitrogen, [{K(TCHPNON)Ca}2(-2:2-N2)] 5, presumably via a transient calcium(I) intermediate.
Supplementary materials
Title
Reductive Activation of N2 using a Calcium/Potassium Bimetallic System Supported by an Extremely Bulky Diamide Ligand
Description
Experimental procedures and characterisation data for all new compounds. Full details of computational studies. Crystal data, details of data collections and refinements. CCDC numbers: 2204507-2204511.
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