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Issue 14, 2018
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NH3 and (NH2)1− as ligands in yttrium metallocene chemistry

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Abstract

(C5Me5)2Y(C3H5)(THF) reacts with ammonia in THF to form the first crystallographically-characterized rare-earth metal complex with a terminal (NH2)1− ligand, (C5Me5)2Y(NH2)(THF), 1. Complex 1 can be protonated with [HNEt3][BPh4] to form [(C5Me5)2Y(NH3)(THF)][BPh4], 2. Both complexes were characterized by X-ray crystallography which allowed a comparison of the Y–NH2 bond length, 2.226(2) Å, with an Y–NH3 bond length, 2.476(2) Å, in analogous coordination environments. Reactions of 2 with NaN3 and acetone produced the known complexes [(C5Me5)2YN3]x and [(C5Me5)2Y(OCMe2)2][BPh4], respectively, suggesting that the ammonia moiety in 2 functions as a displaceable solvate like THF.

Graphical abstract: NH3 and (NH2)1− as ligands in yttrium metallocene chemistry

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Publication details

The article was received on 08 Feb 2018, accepted on 07 Mar 2018 and first published on 08 Mar 2018


Article type: Paper
DOI: 10.1039/C8DT00543E
Citation: Dalton Trans., 2018,47, 5098-5101
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    NH3 and (NH2)1− as ligands in yttrium metallocene chemistry

    M. D. Boshart, J. W. Ziller and W. J. Evans, Dalton Trans., 2018, 47, 5098
    DOI: 10.1039/C8DT00543E

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