Identification of the short-lived Au(N3)42− dianion from its Coulomb explosion products

Drenck, Kasper; Hvelplund, P.; McKenzie, Christine J.; Nielsen, Steen Brøndsted

doi:10.1016/j.ijms.2005.06.002

Cited by 12 publications

(8 citation statements)

References 24 publications

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“…Moreover, gold nitride species have been found to exist in the gas phase: Drenck et al [17] observed the formation of nitrogen-gold AuN n -anions and dianions.…”

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 99%

Gold Nitride: Preparation and Properties

et al. 2009

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We review the currently known methods of producing gold nitride and report on the influence of electrically isolated substrates on the growth of gold nitride films by reactive ion sputtering (RIS). It is found that isolation of the substrate decreases grain size and increases nitrogen content, the latter attributed to longer nitrogen ion lifetime on the surface of the growing film. The chemical reactivity of gold nitride is compared with that of pure gold films using the adsorption of 1-dodecyl mercaptan (CH 3 (CH 2 ) 11 SH) as a model system and it is found that there is no significant difference between gold films and gold nitride in terms of Au-S binding. However, gold nitride nanoparticles are suggested to be worthy of further investigation in terms of their catalytic properties.

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“…Moreover, gold nitride species have been found to exist in the gas phase: Drenck et al [17] observed the formation of nitrogen-gold AuN n -anions and dianions.…”

Section: Review Of Current Methods For Production and Characterisatiomentioning

confidence: 99%

Gold Nitride: Preparation and Properties

et al. 2009

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“…We have developed a technique in which monoanions with high translational energy ͑keV͒ collide with alkali-metal atoms in a vapor and pick up electrons to become dianions. [7][8][9][10][11][12][13][14] In this way we produced dianions of 7,7,8,8-tetracyano-p-quinodimethane ͑TCNQ͒ and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyano-p-quinodimethane ͑TCNQ-F 4 ͒ ͑Fig. 1͒, 9 which are electron acceptors that have been widely employed for the construction of electrically conductive organic charge-transfer salts.…”

Section: Introductionmentioning

confidence: 99%

Dianions of 7,7,8,8-tetracyano-p-quinodimethane and perfluorinated tetracyanoquinodimethane: Information on excited states from lifetime measurements in an electrostatic storage ring and optical absorption spectroscopy

Panja

Kadhane

Andersen

et al. 2007

The Journal of Chemical Physics

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We have developed an experimental technique that allows us to study the physics of short lived molecular dianions in the gas phase. It is based on the formation of monoanions via electrospray ionization, acceleration of these ions to keV energies, and subsequent electron capture in a sodium vapor cell. The dianions are stored in an electrostatic ion storage ring in which they circulate with revolution times on the order of 100 micros. This enables lifetime studies in a time regime covering five orders of magnitude, 10(-5)-1 s. We have produced dianions of 7,7,8,8-tetracyano-p-quinodimethane and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyano-p-quinodimethane (TCNQ-F(4)) and measured their lifetimes with respect to electron autodetachment. Our data indicate that most of the dianions were initially formed in electronically excited states in the electron transfer process. Two levels of excitation were identified by spectroscopy on the dianion of TCNQ-F(4), and the absorption spectrum was compared with spectra obtained from spectroelectrochemistry of TCNQ-F(4) in acetonitrile solution.

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“…Photoexcitation at both 215 and 245 nm leads dominantly to electron detachment with minor peaks corresponding to the fragment ions PtðSCNÞ À 3 , PtðCSÞ À 3 , and PtCS À 2 seen. These are likely the result of consecutive neutral losses from vibrationally excited PtðSCNÞ À 4 since the widths of the peaks are similar to that for PtðSCNÞ À 4 ; a Coulomb explosion process would result in broad peaks as ions scatter in the backward and forward directions [9][10][11]. Likewise, collisional electron detachment of PtðCNÞ 2À 4 was followed by losses of CN or (CN) 2 [9].…”

Section: Resultsmentioning

confidence: 96%

“…Significant work has been carried out to understand their fundamental physical properties [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] but there is limited spectroscopic information on their electronically excited states. Here we focus on the PtðSCNÞ 2À 4 complex and report results from lifetime measurements in an electrostatic ion storage ring as well as spectroscopy experiments at a single pass beam instrument.…”

Section: Introductionmentioning

confidence: 99%