Exceptionally Stable, Hollow Tubular Metal-Organic Architectures: Synthesis, Characterization and Solid-State Transformation Study

Author(s)

Cheng-Yong Su, Zhongshan University
Andrea M. Goforth, University of South Carolina - Columbia
Mark D. Smith, University of South Carolina - Columbia
P. J. Pellechia, University of South Carolina - Columbia
Hans Conrad zur Loye, University of South Carolina - ColumbiaFollow

Document Type

Article

Subject Area(s)

Chemistry

Abstract

An effective solvothermal procedure has been developed to synthesize the new three-dimensional metal−organic framework, [ZnF(AmTAZ)]·solvents, using either 3-amino-1,2,4-triazole (AmTAZ) or 3-amino-1,2,4-triazole-5-carboxylic acid (AmTAZAc) and a choice of several Zn(II) salts as starting materials. The three-dimensional structure displays open-ended, hollow nanotubular channels that are formed by hexanuclear metallamacrocyclic Zn₆F₆(AmTAZ)₆ rings. The framework integrity is maintained to 350 °C, at which point most of the guest solvent molecules have been removed, as evidenced by single-crystal X-ray analyses, ¹H solid-state NMR, and TGA measurements. At higher temperatures, the framework is converted either to zinc oxide (ZnO) when heated in air or to zinc cyanamide (ZnCN₂) when heated in an inert atmosphere. In both cases, the as-grown, rodlike crystal shape is maintained during the solid-state transformation, suggesting a possible route for preparing one-dimensional crystalline nanomaterials.

Publication Info

Published in Journal of the American Chemical Society, Volume 126, Issue 11, 2004, pages 3576-3586.

Rights

Copyright © 2004 American Chemical Society

DOI: 10.1021/ja039022m

Publisher's Version: http://dx.doi.org/10.1021/ja039022m