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

using model chemistry: B1B95/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/CEP-31G*
 hartrees
Energy at 0K-39.088289
Energy at 298.15K-39.094262
Nuclear repulsion energy84.017871
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/CEP-31G*
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' 3697 3538 77.84      
2 A' 3292 3151 0.74      
3 A' 3270 3130 1.79      
4 A' 3256 3117 5.53      
5 A' 1582 1514 7.54      
6 A' 1497 1433 7.17      
7 A' 1463 1401 14.50      
8 A' 1404 1344 1.18      
9 A' 1284 1229 6.12      
10 A' 1205 1154 4.41      
11 A' 1156 1106 15.13      
12 A' 1059 1013 41.66      
13 A' 1048 1003 9.79      
14 A' 907 868 3.65      
15 A' 886 848 7.24      
16 A" 914 875 0.89      
17 A" 862 825 18.74      
18 A" 774 741 126.21      
19 A" 683 654 28.66      
20 A" 624 597 0.52      
21 A" 548 525 56.69      

Unscaled Zero Point Vibrational Energy (zpe) 15704.5 cm-1
Scaled (by 0.9572) Zero Point Vibrational Energy (zpe) 15032.3 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 B1B95/CEP-31G*
ABC
0.31696 0.30879 0.15641

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.120 0.744 0.000
C2 1.121 0.311 0.000
H3 1.275 -1.921 0.000
C4 0.671 -1.017 0.000
H5 -1.507 -1.683 0.000
C6 -0.756 -0.893 0.000
N7 -1.151 0.388 0.000
H8 -0.047 2.104 0.000
N9 0.000 1.090 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08862.79562.28054.36413.30893.29042.55752.1478
C21.08862.23671.40193.29902.22972.27392.13961.3654
H32.79562.23671.08722.79232.27583.34944.23563.2696
C42.28051.40191.08722.27751.43172.30103.20172.2111
H54.36413.29902.79232.27751.09022.10164.05833.1561
C63.30892.22972.27581.43171.09021.34113.07932.1223
N73.29042.27393.34942.30102.10161.34112.04011.3484
H82.55752.13964.23563.20174.05833.07932.04011.0145
N92.14781.36543.26962.21113.15612.12231.34841.0145

picture of 1H-Pyrazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 132.207 H1 C2 N9 121.732
C2 C4 H3 127.495 C2 C4 C6 103.784
C2 N9 N7 113.834 C2 N9 H8 127.439
H3 C4 C6 128.721 C4 C2 N9 106.061
C4 C6 H5 128.622 C4 C6 N7 112.118
H5 C6 N7 119.260 C6 N7 N9 104.203
N7 N9 H8 118.727
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.293      
2 C -0.619      
3 H 0.333      
4 C 0.052      
5 H 0.277      
6 C -0.719      
7 N 0.091      
8 H 0.349      
9 N -0.057      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.165 0.938 0.000 2.360
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.065 2.587 0.000
y 2.587 -21.168 0.000
z 0.000 0.000 -31.646
Traceless
 xyz
x -2.658 2.587 0.000
y 2.587 9.187 0.000
z 0.000 0.000 -6.529
Polar
3z2-r2-13.058
x2-y2-7.897
xy2.587
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.105 0.246 0.000
y 0.246 7.224 0.000
z 0.000 0.000 3.191


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000