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

using model chemistry: B3LYP/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 B3LYP/CEP-31G
 hartrees
Energy at 0K-39.059405
Energy at 298.15K-39.065413
Nuclear repulsion energy 
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 B3LYP/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' 3702 3585 67.56      
2 A' 3297 3193 1.65      
3 A' 3275 3171 5.90      
4 A' 3266 3162 1.73      
5 A' 1542 1494 9.17      
6 A' 1442 1397 13.59      
7 A' 1412 1368 10.04      
8 A' 1358 1315 2.88      
9 A' 1256 1217 2.47      
10 A' 1149 1113 0.57      
11 A' 1130 1094 18.86      
12 A' 1055 1022 10.03      
13 A' 1015 983 41.51      
14 A' 915 886 3.56      
15 A' 908 879 9.58      
16 A" 928 898 0.31      
17 A" 877 849 17.67      
18 A" 786 762 147.04      
19 A" 671 650 70.74      
20 A" 636 616 7.65      
21 A" 591 572 56.48      

Unscaled Zero Point Vibrational Energy (zpe) 15605.0 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 15111.9 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 B3LYP/CEP-31G
ABC
0.30708 0.29972 0.15168

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.135 0.715 0.000
C2 1.131 0.301 0.000
H3 1.268 -1.935 0.000
C4 0.668 -1.031 0.000
H5 -1.516 -1.714 0.000
C6 -0.772 -0.922 0.000
N7 -1.190 0.378 0.000
H8 -0.045 2.120 0.000
N9 0.000 1.107 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08582.78772.28034.38523.33633.34252.59392.1709
C21.08582.23971.41023.32702.26252.32302.16661.3892
H32.78772.23971.08472.79272.27733.37514.26233.2955
C42.28031.41021.08472.28841.44422.33213.23112.2400
H54.38523.32702.79272.28841.08662.11714.10713.2027
C63.33632.26252.27731.44421.08661.36583.12842.1712
N73.34252.32303.37512.33212.11711.36582.08541.3960
H82.59392.16664.26233.23114.10713.12842.08541.0143
N92.17091.38923.29552.24003.20272.17121.39601.0143

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 131.585 H1 C2 N9 122.122
C2 C4 H3 127.245 C2 C4 C6 104.861
C2 N9 N7 113.035 C2 N9 H8 128.005
H3 C4 C6 127.894 C4 C2 N9 106.293
C4 C6 H5 128.900 C4 C6 N7 112.157
H5 C6 N7 118.943 C6 N7 N9 103.654
N7 N9 H8 118.960
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.290      
2 C -0.457      
3 H 0.322      
4 C -0.004      
5 H 0.277      
6 C -0.628      
7 N 0.082      
8 H 0.337      
9 N -0.220      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.472 0.677 0.000 2.562
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.104 2.988 0.000
y 2.988 -21.635 0.000
z 0.000 0.000 -32.378
Traceless
 xyz
x -3.098 2.988 0.000
y 2.988 9.606 0.000
z 0.000 0.000 -6.508
Polar
3z2-r2-13.016
x2-y2-8.470
xy2.988
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.160 0.300 -0.000
y 0.300 7.305 0.000
z -0.000 0.000 2.957


<r2> (average value of r2) Å2
<r2> 68.900
(<r2>)1/2 8.301