Journal
POLYHEDRON
Volume 86, Issue -, Pages 76-80Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2014.05.015
Keywords
Diruthenium; Polyyne; Electrochemistry; Magnetism; Spectroscopy
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Funding
- National Science Foundation [CHE 1057621, CHE 1362214]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1362214] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1057621] Funding Source: National Science Foundation
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A new family of wire-like molecules with butadiyndiyl (1a/b), hexadiyndiyl (2) and phenylenediethynyl (3) bridges linking three diruthenium units have been prepared. The single crystal X-ray diffraction study of la revealed structural details of the trimeric compounds, including a distance of 18 angstrom between two Ru-2 termini. Both the voltammetric and spectroscopic data point to an extensive electronic delocalization in trimers 1 and 2, and the lack of delocalization in 3, demonstrating the advantage of linear polyyndiyl in mediating intermetallic electronic couplings. Magnetic studies of compound la reveal that a spin transition may occur as the temperature increases from 1.8 to 300 K. (C) 2014 Elsevier Ltd. All rights reserved.
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