- Detection and characterization of scandium imide, ScNH
-
A supersonic molecular beam of scandium imide, ScNH, and deuterated imide, ScND, were produced using a laser ablation/reaction source and interrogated by laser induced fluorescence and dispersed fluorescence spectroscopy. The field free fine and magnetic hyperfine interactions and Stark effect in the (0,0) A2Πr-X2Σ+ transition of ScNH (origin=15 023.033 cm-1) were analyzed. Ground state vibrational spacing for ScNH and ScND was measured. The determined permanent electric dipole moments are μ(A2Π)=4.08(7)D and μ(X2Σ+)=2.28(15)D. Plausible molecular orbital descriptions are given for the A2Πr and X2Σ+ states based upon the interpretation of the spectroscopic parameters and a comparison with other isovalent molecules is made.
- Steimle,Xin,Marr,Beaton
-
-
Read Online
- Reactions of laser-ablated scandium atoms with nitrogen: Matrix infrared spectra and DFT calculations for scandium nitrides and the fixation of nitrogen by two scandium atoms
-
Laser-ablated Sc atoms react with nitrogen to form ScN, Sc(N2) and (ScN)2 and their N2-ligated counterparts. These identifications are based on nitrogen-15 isotopic shifts and agreement with DFT vibrational frequency calculations. It is noteworthy that annealed argon matrix samples containing 2% N2 give almost the same absorptions as nitrogen matrix samples for the ligated complexes (NN)(x)ScN and (ScN)2(NN)(x). The rhombic (ScN)2 molecule is made by reaction of a second Sc atom with an intermediate ScN2 species and, thus, provides a method of nitrogen fixation with naked metal atoms.
- Chertihin, George V.,Andrews, Lester,Bauschlicher Jr., Charles W.
-
-
Read Online
