return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B97D3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/6-31+G**
 hartrees
Energy at 0K-226.071950
Energy at 298.15K-226.077819
HF Energy-226.071950
Nuclear repulsion energy162.024399
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 B97D3/6-31+G**
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' 3624 3561 69.11      
2 A' 3236 3181 2.32      
3 A' 3217 3162 3.89      
4 A' 3204 3149 4.48      
5 A' 1527 1501 5.69      
6 A' 1448 1423 7.22      
7 A' 1401 1377 10.32      
8 A' 1346 1323 4.57      
9 A' 1251 1229 2.34      
10 A' 1156 1136 0.22      
11 A' 1124 1105 18.17      
12 A' 1038 1020 9.01      
13 A' 1023 1006 36.81      
14 A' 921 905 3.42      
15 A' 907 891 8.78      
16 A" 851 836 7.05      
17 A" 797 784 16.79      
18 A" 717 705 101.75      
19 A" 670 658 17.54      
20 A" 615 605 0.15      
21 A" 498 490 54.37      

Unscaled Zero Point Vibrational Energy (zpe) 15285.2 cm-1
Scaled (by 0.9828) Zero Point Vibrational Energy (zpe) 15022.3 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 B97D3/6-31+G**
ABC
0.31787 0.31060 0.15710

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.117 0.735 0.000
C2 1.120 0.310 0.000
H3 1.271 -1.904 0.000
C4 0.667 -1.005 0.000
H5 -1.489 -1.691 0.000
C6 -0.748 -0.898 0.000
N7 -1.154 0.383 0.000
H8 -0.049 2.101 0.000
N9 0.000 1.091 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08372.77142.26514.34553.29743.28992.56042.1464
C21.08372.21911.39083.28732.22432.27562.13901.3658
H32.77142.21911.08342.76832.25633.33444.21723.2544
C42.26511.39081.08342.26181.41892.29023.18762.2002
H54.34553.28732.76832.26181.08502.10094.05583.1555
C63.29742.22432.25631.41891.08501.34423.07922.1255
N73.28992.27563.33442.29022.10091.34422.04251.3544
H82.56042.13904.21723.18764.05583.07922.04251.0106
N92.14641.36583.25442.20023.15552.12551.35441.0106

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 132.188 H1 C2 N9 121.903
C2 C4 H3 127.042 C2 C4 C6 104.831
C2 N9 N7 113.402 C2 N9 H8 127.770
H3 C4 C6 128.127 C4 C2 N9 105.909
C4 C6 H5 128.820 C4 C6 N7 111.659
H5 C6 N7 119.521 C6 N7 N9 104.199
N7 N9 H8 118.827
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.155      
2 C -0.226      
3 H 0.142      
4 C 0.050      
5 H 0.144      
6 C -0.220      
7 N -0.171      
8 H 0.320      
9 N -0.193      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.211 0.827 0.000 2.361
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.281 2.664 0.000
y 2.664 -22.341 0.000
z 0.000 0.000 -32.429
Traceless
 xyz
x -2.896 2.664 0.000
y 2.664 9.014 0.000
z 0.000 0.000 -6.119
Polar
3z2-r2-12.238
x2-y2-7.940
xy2.664
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.306 0.120 0.000
y 0.120 8.129 0.000
z 0.000 0.000 4.746


<r2> (average value of r2) Å2
<r2> 81.186
(<r2>)1/2 9.010