title: Infrared photodissociation spectroscopy of mass-selected heteronuclear iron-copper carbonyl cluster anions in the gas phase.
abstract: Mass-selected heteronuclear iron-copper carbonyl cluster anions CuFe(CO)n(-) (n = 4-7) are studied by infrared photodissociation spectroscopy in the carbonyl stretching frequency region in the gas phase. The cluster anions are produced via a laser vaporization supersonic cluster ion source. Their geometric structures are determined by comparison of the experimental spectra with those calculated by density functional theory. The experimentally observed CuFe(CO)n(-) (n = 4-7) cluster anions are characterized to have (OC)4Fe-Cu(CO)n-4 structures, each involving a C3v symmetry Fe(CO)4(-) building block. Bonding analysis indicates that the Fe-Cu bond in the CuFe(CO)n(-) (n = 4-7) cluster anions is a σ type single bond with the iron center possessing the most favored 18-electron configuration. The results provide important new insight into the structure and bonding of hetronuclear transition metal carbonyl cluster anions.
authors: †Department of Applied Chemistry, East China Institute of Technology, Nanchang, Jiangxi Province 330013, China.
authors: Ning
authors: N
authors: Zhang
authors: †Department of Applied Chemistry, East China Institute of Technology, Nanchang, Jiangxi Province 330013, China.
authors: Mingbiao
authors: M
authors: Luo
authors: †Department of Applied Chemistry, East China Institute of Technology, Nanchang, Jiangxi Province 330013, China.
authors: Chaoxian
authors: C
authors: Chi
authors: ‡Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China.
authors: Guanjun
authors: G
authors: Wang
authors: ‡Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China.
authors: Jieming
authors: J
authors: Cui
authors: ‡Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China.
authors: Mingfei
authors: M
authors: Zhou