A Study of the sup 13 C Chemical Shift Anisotropy in Metal Acetylides.
01 January 1989
Acetylides are the most common form of ionic carbides and are composed of discrete (C=C) sup (2-) anions coordinated alkali or alkaline earth cations. Upon hydrolysis, these carbides liberate acetylene: CaC sub 2 is the primary industrial source of acetylene. The anisotropy of the sup 13 C chemical shielding in five metal acetylides, Li sub 2 C sub 2, Na sub 2, CaC sub 2, SrC sub 2, and BaC sub 2, is measured with sup 13 C Nuclear Magnetic Resonance (NMR) spectroscopy.