15117-84-7Relevant articles and documents
State to state recoil anisotropies in the photodissociation of deuterated ammonia
Mordaunt, David H.,Ashfold, Michael N. R.,Dixon, Richard N.
, p. 7659 - 7662 (1998)
The near ultraviolet photodissociation of deuterated ammonia, ND3, allows particularly clear observation and quantification of the quantum state dependent angular anisotropy of the recoiling D+ND2(X) photoproducts. The recoil anisotr
Microwave optical double resonance spectroscopy of ND2 in (000) of X2B1
Cook, J. M.,Hills, G. W.
, p. 2144 - 2153 (1983)
Microwave optical double resonance spectroscopy has been used observe in excess of 200 microwave transitions involving 21 rotational levels in the (000), X2B1 state of ND2.The obseved transitions have been fitted to two model Hamilto
The effect of parent zero-point motion on the ND 2 ( ? ) rotational state distribution in the 193.3 nm photolysis of ND 3
Reid, Jonathan P.,Loomis, Richard A.,Leone, Stephen R.
, p. 240 - 248 (2000)
The vibrational and rotational product-state distributions of ND2(?2A1) has been probed following the photodissociation of ND3 at 193.3 nm by time-resolved Fourier Transform infrared emission spectroscopy. The dynamics of the bond cleavage are inferred from the product state distributions by comparison with an earlier study of the photodissociation of NH3. The degree of excitation about the minor rotational b/c-axes of the product is attributed to the amount of zero-point energy of the parent molecule in the ν4 H-N-H (D-N-D) scissors bending coordinate of the NH3/ND3(?) predissociative state. A bimodal ND2(?2A1) distribution is observed for rotation about the primary a-axis, analogous to the NH2 fragment formed in the photodissociation of NH3.
The four isotopomer reactions of NH(a) and ND(a) with NH3(X) and ND3(X)
Adam,Hack,Olzmann
, p. 439 - 455 (2007/10/03)
The reactions NH(a) + NH3 (X) → products (1) ND(a) + NH3 (X) → products (2) NH(a) + ND3 (X) → products (3) ND(a) + ND3 (X) → products (4) were studied in a quasi-static reaction cell at room temperature and pressures of 10 and 20 mbar with He as the main carrier gas. The electronically excited reactants NH(a) and ND(a) were generated by laser-flash photolysis of HN3 and DN3, respectively, at λ = 308 nm and detected by laser-induced fluorescence (LIF). Also the ground state species NH(X) and ND(X) as products were detected by LIF. From the measured concentration-time profiles of NH(a) and ND(a) under pseudo-first order conditions, the following rate constants were obtained: k1, = (9.1 ± 0.9) × 1013 cm3 mol-1 s-1 k2 = (9.6 ± 1.0) × 1013 cm3 mol-1 s-1 k3 = (8.0 ± 1.0) × 1013 cm3 mol-1 s-1 k4 = (7.2 ± 0.8) × 1013 cm3 mol-1 s-1. The major products are the corresponding NHi-D2-i(X) radicals (i = 0, 1, 2), whereas quenching processes such as NH(a) + ND3 → NH(X) + ND3 are of minor importance (1%). The isotope exchange NH(a) + ND3 → ND(X) + NHD2 is negligible, and the corresponding channel on the singlet surface NH(a) + ND3(X) → ND(a) + NHD2 (X) contributes with 1% to the overall NH(a) depletion in that reaction. The experimental findings are discussed in terms of a chemical activation mechanism by means of statistical rate theory.
