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All results from a given calculation for C3H4N2 (2H-Imidazole)

using model chemistry: B1B95/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/cc-pVTZ
 hartrees
Energy at 0K-226.106190
Energy at 298.15K-226.112239
HF Energy-226.106190
Nuclear repulsion energy167.605214
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 B1B95/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 A1 3237 3098 16.82      
2 A1 3079 2947 0.07      
3 A1 1729 1655 20.10      
4 A1 1417 1357 0.01      
5 A1 1383 1324 31.18      
6 A1 1263 1208 4.82      
7 A1 1045 1000 1.42      
8 A1 940 900 12.71      
9 A2 1146 1096 0.00      
10 A2 942 901 0.00      
11 A2 553 530 0.00      
12 B1 3115 2982 0.90      
13 B1 1003 960 21.89      
14 B1 836 800 3.88      
15 B1 376 360 37.20      
16 B2 3221 3083 7.11      
17 B2 1801 1724 0.22      
18 B2 1397 1337 35.65      
19 B2 1242 1189 0.83      
20 B2 1086 1039 31.86      
21 B2 932 892 75.28      

Unscaled Zero Point Vibrational Energy (zpe) 15870.9 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 15190.0 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 B1B95/cc-pVTZ
ABC
0.36453 0.30854 0.17254

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.192
N2 0.000 0.996 0.279
N3 0.000 -0.996 0.279
C4 0.000 0.723 -0.938
C5 0.000 -0.723 -0.938
H6 -0.888 0.000 1.825
H7 0.888 0.000 1.825
H8 0.000 1.463 -1.723
H9 0.000 -1.463 -1.723

Atom - Atom Distances (Å)
  C1 N2 N3 C4 C5 H6 H7 H8 H9
C11.35111.35112.24942.24941.09051.09053.26143.2614
N21.35111.99241.24762.10652.04202.04202.05573.1714
N31.35111.99242.10651.24762.04202.04203.17142.0557
C42.24941.24762.10651.44602.99082.99081.07882.3229
C52.24942.10651.24761.44602.99082.99082.32291.0788
H61.09052.04202.04202.99082.99081.77623.93893.9389
H71.09052.04202.04202.99082.99081.77623.93893.9389
H83.26142.05573.17141.07882.32293.93893.93892.9269
H93.26143.17142.05572.32291.07883.93893.93892.9269

picture of 2H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C4 119.848 C1 N3 C5 119.848
N2 C1 N3 95.007 N2 C1 H6 113.080
N2 C1 H7 113.080 N2 C4 C5 102.648
N2 C4 H8 124.009 N3 C1 H6 113.080
N3 C1 H7 113.080 N3 C5 C4 102.648
N3 C5 H9 124.009 C4 C5 H9 133.342
C5 C4 H8 133.342 H6 C1 H7 109.058
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.046      
2 N -0.150      
3 N -0.150      
4 C -0.122      
5 C -0.122      
6 H 0.144      
7 H 0.144      
8 H 0.150      
9 H 0.150      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.702 0.702
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.136 0.000 0.000
y 0.000 -34.798 0.000
z 0.000 0.000 -21.705
Traceless
 xyz
x 0.116 0.000 0.000
y 0.000 -9.878 0.000
z 0.000 0.000 9.762
Polar
3z2-r219.524
x2-y26.662
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.213 0.000 0.000
y 0.000 5.917 0.000
z 0.000 0.000 8.251


<r2> (average value of r2) Å2
<r2> 76.420
(<r2>)1/2 8.742