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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-44.090082
Energy at 298.15K-44.093725
HF Energy-43.483247
Nuclear repulsion energy89.142015
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3017 2945 0.00      
2 Ag 2012 1964 0.00      
3 Ag 1506 1470 0.00      
4 Ag 1413 1379 0.00      
5 Ag 1026 1002 0.00      
6 Ag 936 914 0.00      
7 Ag 476 465 0.00      
8 Ag 202 198 0.00      
9 Au 3098 3024 11.06      
10 Au 1214 1185 0.47      
11 Au 772 753 1.07      
12 Au 343 335 1.07      
13 Au 76 74 19.20      
14 Bg 3078 3004 0.00      
15 Bg 1318 1286 0.00      
16 Bg 1075 1049 0.00      
17 Bg 307 299 0.00      
18 Bu 3023 2951 17.03      
19 Bu 2017 1968 10.42      
20 Bu 1514 1477 16.61      
21 Bu 1322 1291 0.36      
22 Bu 887 866 7.39      
23 Bu 472 461 5.62      
24 Bu 119 116 17.98      

Unscaled Zero Point Vibrational Energy (zpe) 15611.0 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 15236.3 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/CEP-121G
ABC
0.81712 0.04668 0.04491

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.788 0.000
C2 0.000 -0.788 0.000
C3 -1.404 1.316 0.000
C4 1.404 -1.316 0.000
N5 2.550 -1.721 0.000
N6 -2.550 1.721 0.000
H7 0.527 1.162 0.892
H8 0.527 1.162 -0.892
H9 -0.527 -1.162 0.892
H10 -0.527 -1.162 -0.892

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.57541.50012.52893.57722.71521.10161.10162.20762.2076
C21.57542.52891.50012.71523.57722.20762.20761.10161.1016
C31.50012.52893.84834.98561.21532.13322.13322.77492.7749
C42.52891.50013.84831.21534.98562.77492.77492.13322.1332
N53.57722.71524.98561.21536.15273.63273.63273.25233.2523
N62.71523.57721.21534.98566.15273.25233.25233.63273.6327
H71.10162.20762.13322.77493.63273.25231.78402.55133.1132
H81.10162.20762.13322.77493.63273.25231.78403.11322.5513
H92.20761.10162.77492.13323.25233.63272.55133.11321.7840
H102.20761.10162.77492.13323.25233.63273.11322.55131.7840

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 110.601 C1 C2 H9 109.836
C1 C2 H10 109.836 C1 C3 N6 178.908
C2 C1 C3 110.601 C2 C1 H7 109.836
C2 C1 H8 109.836 C2 C4 N5 178.908
C3 C1 H7 109.193 C3 C1 H8 109.193
C4 C2 H9 109.193 C4 C2 H10 109.193
H7 C1 H8 108.139 H9 C2 H10 108.139
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability