[Ge=Ge]⁴⁻ Dumbbells in the Zintl Phase Li₃NaGe₂

Abstract

Ge-Ge double bonds: The reaction of elemental lithium, sodium, and germanium at 750 °C results in the Zintl phase Li3NaGe2 , which, according to the Zintl-Klemm concept, contains [Ge=Ge](4-) dumbbells with unprecedented short Ge-Ge distances. Based on structural, spectroscopic, and theoretical considerations, convincing evidence is given that Ge-Ge double bonds are in fact present.

New Experimental Insight into the Nature of Metal−Metal Bonds in Digallium Compounds: J Coupling between Quadrupolar Nuclei

“…The nature of multiple bonding between elements is a topic of great fundamental and practical interest . For example, a series of recent papers has provided experimental evidence and a theoretical understanding of the nature of the boron≡boron triple bond .…”

“…The nature of multiple bonding between elements is at opico f great fundamental and practical interest. [1][2][3][4][5][6] For example, as eries of recent papers has provided experimental evidence and at heoretical understanding of the nature of the boron boron triple bond. [7,8] The excitement around this work is somewhat reminiscent of that generated by the first report by Robinsoni n1 997 of ag allyne, [9] purported to contain ag alliumgallium triple bond.…”