Communications: The electronic spectrum of Li(NH3)4 | Zendy

Luigi Varriale | Zendy; Nicola M. Tonge | Zendy; Nitika Bhalla | Zendy; Andrew M. Ellis | Zendy

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Communications: The electronic spectrum of Li(NH3)4

Author(s) -

Luigi Varriale,

Nicola M. Tonge,

Nitika Bhalla,

Andrew M. Ellis

Publication year - 2010

Publication title -

the journal of chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.071

H-Index - 357

eISSN - 1089-7690

pISSN - 0021-9606

DOI - 10.1063/1.3396023

Subject(s) - lithium (medication) , chemistry , excited state , electronic structure , absorption spectroscopy , jahn–teller effect , atomic physics , molecular electronic transition , spectroscopy , ammonia , electron configuration , spectrum (functional analysis) , infrared spectroscopy , ion , computational chemistry , physics , optics , medicine , organic chemistry , quantum mechanics , endocrinology

Li(NH(3))(4) has been proposed as a key entity in lithium-ammonia solutions, but its spectral signature has so far proved impossible to distinguish from other species in these solutions. Here we report the first electronic spectrum of Li(NH(3))(4) in the gas phase, which was recorded using mass-selective depletion spectroscopy. Strong absorption is observed in the near-infrared and the band system is assigned to the A (2)T(2)-X (2)A(1) transition in a nominally tetrahedral complex. However, the vibrational structure is indicative of a substantial Jahn-Teller effect in the excited electronic state. The broad and structured spectrum confirms a recent theoretical prediction that the electronic spectrum of Li(NH(3))(4) will strongly overlap with the spectrum of the solvated electron in lithium-ammonia solutions.1168

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