title: Newly detected molecules in dense interstellar clouds.
abstract: The last year or so has seen the identification of several new interstellar molecules, including C2S, C3S, C5H, C6H, and (probably) HC2CHO in the cold, dark cloud TMC-1; and the discovery of the first interstellar phosphorous-containing molecule, PN, in the Orion "plateau" source.  Further interesting results include the observations of 13C3H2 and C3HD, and the first detection of HCOOH (formic acid) in a cold cloud.
authors.affiliation: FCRAO, University of Massachusetts, Amherst 01003, USA.
authors.forename: W M
authors.initials: WM
authors.lastname: Irvine
authors.forename: L W
authors.initials: LW
authors.lastname: Avery
authors.forename: P
authors.initials: P
authors.lastname: Friberg
authors.forename: H E
authors.initials: HE
authors.lastname: Matthews
authors.forename: L M
authors.initials: LM
authors.lastname: Ziurys
mesh_terms: D055580:Astronomical Phenomena; D001256:Astronomy; D002244:Carbon / Q000737:chemistry*; D055598:Chemical Phenomena; D002621:Chemistry; D005118:Extraterrestrial Environment; D006838:Hydrocarbons / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry*; D013057:Spectrum Analysis; D013455:Sulfur / Q000737:chemistry*
chemical_list: D006838:Hydrocarbons; D010758:Phosphorus; D013455:Sulfur; D002244:Carbon; D010100:Oxygen