title: Heteroborane analogs of silicon clusters: experimental and theoretical studies on Bi2Si5 and Bi2Si5(-).
abstract: We have investigated the electronic structure of anionic and neutral Bi(2)Si(5) by means of anion photoelectron spectroscopy and density functional calculations. Both the experiments and calculations reveal that the Bi(2)Si(5)(-) anion prefers to adopt a distorted trigonal-bipyramidal structure with Bi(2) bridges. Following the isolobal analogy between divalent Si and B-H group, we show that both neutral Bi(2)Si(5) and neutral Bi(2)B(5)H(5) adopt similar pentagonal-bipyrmidal geometries and have analogous orbital energy patterns.
authors.affiliation: Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, USA.
authors.forename: Xiang
authors.initials: X
authors.lastname: Li
authors.forename: Haopeng
authors.initials: H
authors.lastname: Wang
authors.forename: Andrej
authors.initials: A
authors.lastname: Grubisic
authors.forename: Di
authors.initials: D
authors.lastname: Wang
authors.forename: Kit H
authors.initials: KH
authors.lastname: Bowen
authors.forename: Miley
authors.initials: M
authors.lastname: Jackson
authors.forename: Boggavarapu
authors.initials: B
authors.lastname: Kiran