Structure Data of Free Polyatomic Molecules
149
LIF
CNNi
State
Energy [eV]
r0(Ni–C) [Å]
r0(C≡N) [Å]
Nickel cyanide
Nickel monocyanide
C∞v
Ni–C≡N
~
X1 2∆5/2
0.00
1.8292(28)
1.1591(29)
NiCN molecules were produced by the reaction of laser-ablated nickel atoms with cyanogen
under supersonic jet-cooled conditions. The isotopic species NiC15N was produced in a
similar way except that acetonitrile-15N was used instead of cyanogen. Laser-excited
~
~
fluorescence in the region 500…630 nm revealed seven electronic states, X1 2∆5/2, X 2 2∆3/2,
~
~
~
~
~
W1 2Π3/2, A 2∆5/2, B 2Π3/2, C 2Φ7/2 and D 2Φ5/2. Rotational constants and bond lengths
~
were determined for the X1 2∆5/2 ground state.
Kingston, C.T., Merer, A.J., Varberg, T.D.: J. Mol. Spectrosc. 215 (2002) 106.
Landolt-Börnstein
New Series II/28B