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All results from a given calculation for C3H4N2 (1H-Imidazole)

using model chemistry: HF/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/daug-cc-pVTZ
 hartrees
Energy at 0K-224.900414
Energy at 298.15K-224.906639
HF Energy-224.900414
Nuclear repulsion energy165.294878
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 HF/daug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3907 3535 93.29      
2 A' 3428 3101 1.92      
3 A' 3399 3075 3.26      
4 A' 3393 3069 4.30      
5 A' 1720 1555 21.90      
6 A' 1643 1486 24.65      
7 A' 1567 1417 23.89      
8 A' 1481 1340 9.18      
9 A' 1403 1269 0.70      
10 A' 1244 1125 6.06      
11 A' 1217 1101 4.18      
12 A' 1174 1062 12.67      
13 A' 1144 1035 56.17      
14 A' 1018 921 1.31      
15 A' 980 887 6.72      
16 A" 1013 916 0.00      
17 A" 982 889 20.54      
18 A" 844 763 62.23      
19 A" 730 660 11.83      
20 A" 691 625 5.11      
21 A" 554 501 115.50      

Unscaled Zero Point Vibrational Energy (zpe) 16764.8 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 15165.5 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 HF/daug-cc-pVTZ
ABC
0.33173 0.32340 0.16376

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.740 -0.962 0.000
H2 -0.014 2.082 0.000
C3 1.108 0.287 0.000
H4 2.101 0.675 0.000
C5 0.630 -0.973 0.000
H6 1.183 -1.887 0.000
H7 -2.074 0.656 0.000
C8 -1.073 0.280 0.000
N9 0.000 1.093 0.000

Atom - Atom Distances (Å)
  N1 H2 C3 H4 C5 H6 H7 C8 N9
N13.12932.23043.27911.37052.13402.09721.28602.1840
H23.12932.11632.53953.12214.14482.50542.08990.9891
C32.23042.11631.06631.34762.17483.20322.18081.3697
H43.27912.53951.06632.20912.72124.17493.19832.1418
C51.37053.12211.34762.20911.06763.15732.11482.1599
H62.13404.14482.17482.72121.06764.13233.12813.2055
H72.09722.50543.20324.17493.15734.13231.06942.1196
C81.28602.08992.18083.19832.11483.12811.06941.3460
N92.18400.98911.36972.14182.15993.20552.11961.3460

picture of 1H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N4 69.796 N1 C2 H7 41.899
N1 C3 C5 35.195 N1 C3 H8 33.877
C2 N1 C3 42.522 C2 N1 H6 102.248
C2 N4 C5 81.895 C3 N1 H6 59.726
C3 C5 N4 20.983 C3 C5 H9 37.716
N4 C2 H7 111.695 N4 C5 H9 58.699
C5 C3 H8 69.071
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -1.437      
2 H 0.303      
3 C -0.309      
4 H 0.992      
5 C 0.120      
6 H 0.819      
7 H 1.477      
8 C -1.008      
9 N -0.957      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.073 3.635 0.000 3.791
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.757 -3.534 0.000
y -3.534 -25.988 0.000
z 0.000 0.000 -32.313
Traceless
 xyz
x 2.393 -3.534 0.000
y -3.534 3.547 0.000
z 0.000 0.000 -5.940
Polar
3z2-r2-11.880
x2-y2-0.769
xy-3.534
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.854 -0.083 0.000
y -0.083 7.641 0.000
z 0.000 0.000 4.860


<r2> (average value of r2) Å2
<r2> 78.576
(<r2>)1/2 8.864