ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The electronic and molecular structure of a series of nonstoichiometric pentaatomic species, Al3X2−(X=C,Si,Ge) and their corresponding neutrals, have been studied by photoelectron spectroscopy and ab initio calculations. Well-resolved photodetachment transitions were observed for all three species and were compared with the calculations. Al3C2− was found to have a C2v(1A1) global minimum with an Al− ion coordinated to the CC triple bond in a quasi-linear AlCCAl molecule. Al3Si2− and Al3Ge2− were found to be different from the isoelectronic Al3C2− anion. They each have an almost planar trapezium global minimum structure with several low-lying isomers. The quasi-planarity of Al3Si2− and Al3Ge2− was understood by comparison with the previously known SiAl4− planar molecule. © 2002 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1429652
