The structures of two linear silicon carbides, SiC4 and SiC6, have been determined by a combination of isotopic substitution and large-scale coupled-cluster ab initio calculations, following detection of all of the singly substituted isotopic species in a supersonic molecular beam with a Fourier transform microwave...

The linear carbon-chain radicals C and have been detected in a supersonic molecu- 6S, C7S, C8S, C9S lar beam by Fourier transform microwave spectroscopy, and measurements of the previously studied chains C and have been extended using the same technique. The electronic ground state, as pre- 4S C5S dicted,...

The linear carbon chain radicals HC5S, HC6S, HC7S, and HC8S and the asymmetric top chains H2C4S, H2C5S, H2C6S, and H2C7S have been detected in a supersonic molecular beam by Fourier transform microwave spectroscopy. Like the shorter HCnS chains, the electronic ground states of the four longer chains...