Chemistry and Physics Faculty Articles

Title

Utility of Anhydrous Neodymium Nitrate as a Precursor to Extended Organoneodymium Nitrate Networks

Document Type

Article

Publication Date

2004

Publication Title

Inorganic Chemistry

ISSN

0020-1669

Volume

43

Issue/No.

18

First Page

5754

Last Page

5760

Peer Reviewed

1

Abstract

Hydrated neodymium nitrates can be readily transformed to anhydrous ether solvates which react with cyclopentadienyl reagents to make organometallic nitrate complexes with variable degrees of oligomerization. Heating Nd(NO3)3(H2O)6 in tetrahydrofuran at reflux, removal of solvent, drying at 100 °C under high vacuum, and addition of hot THF generates Nd(NO3)3(THF)3, 1. Using dimethoxyethane, Nd(NO3)3(DME)2, 2, can be obtained similarly. Addition of NaC5Me5 to 1 generates (C5Me5)Nd(NO3)3(THF)Na(THF)x complexes which crystallize as {[(C5Me5)(NO3)2Nd(THF)(μ-NO3)]2Na(THF)4}[Na(THF)6], 3, or [(C5Me5)Nd(THF)(μ-NO3)3Na(THF)2]n, 4, depending on the conditions. The trimetallic Nd2Na unit in 3 forms an extended system in 4 via bridging nitrates. Addition of KC5Me5 and 18-crown-6 to 1 generates another extended complex [(C5Me5)Nd(THF)(NO3)(μ-NO3)2K(18-crown-6)]n, 5, in which an 18-crown-6 ligated potassium links neodymium centers via two bridging nitrates and an agostic interaction between a C5Me5 methyl group and potassium.

Comments

©2004 American Chemical Society

DOI

10.1021/ic049187b

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