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: BLYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-226.184675
Energy at 298.15K-226.190529
Nuclear repulsion energy161.612157
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 BLYP/6-311G**
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' 3561 3547 62.70      
2 A' 3188 3175 2.47      
3 A' 3170 3158 3.71      
4 A' 3156 3144 4.73      
5 A' 1505 1499 4.93      
6 A' 1420 1415 5.90      
7 A' 1371 1366 9.04      
8 A' 1324 1319 5.06      
9 A' 1226 1221 1.66      
10 A' 1127 1122 0.58      
11 A' 1102 1097 17.13      
12 A' 1024 1020 7.83      
13 A' 998 995 34.54      
14 A' 911 908 6.29      
15 A' 897 894 9.31      
16 A" 852 849 4.92      
17 A" 801 797 14.72      
18 A" 719 716 80.29      
19 A" 668 665 21.57      
20 A" 618 616 0.16      
21 A" 485 483 53.29      

Unscaled Zero Point Vibrational Energy (zpe) 15061.5 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 15002.8 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 BLYP/6-311G**
ABC
0.31673 0.30866 0.15632

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.121 0.733 0.000
C2 1.122 0.310 0.000
H3 1.275 -1.904 0.000
C4 0.670 -1.004 0.000
H5 -1.484 -1.697 0.000
C6 -0.747 -0.900 0.000
N7 -1.162 0.379 0.000
H8 -0.052 2.109 0.000
N9 0.000 1.096 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08442.76932.26374.34743.29993.30202.57122.1514
C21.08442.21861.38983.28942.22632.28582.14861.3706
H32.76932.21861.08382.76692.25743.33944.22643.2596
C42.26371.38981.08382.26271.42072.29603.19602.2050
H54.34743.28942.76692.26271.08592.10074.06663.1630
C63.29992.22632.25741.42071.08591.34453.08802.1311
N73.30202.28583.33942.29602.10071.34452.05591.3658
H82.57122.14864.22643.19604.06663.08802.05591.0141
N92.15141.37063.25962.20503.16302.13111.36581.0141

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 131.997 H1 C2 N9 121.974
C2 C4 H3 127.071 C2 C4 C6 104.767
C2 N9 N7 113.297 C2 N9 H8 127.942
H3 C4 C6 128.161 C4 C2 N9 106.028
C4 C6 H5 128.533 C4 C6 N7 112.230
H5 C6 N7 119.237 C6 N7 N9 103.677
N7 N9 H8 118.761
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.098      
2 C 0.120      
3 H 0.089      
4 C -0.274      
5 H 0.091      
6 C 0.061      
7 N -0.190      
8 H 0.229      
9 N -0.223      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.025 0.926 0.000 2.226
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.961 2.426 0.000
y 2.426 -22.432 0.000
z 0.000 0.000 -31.860
Traceless
 xyz
x -2.814 2.426 0.000
y 2.426 8.478 0.000
z 0.000 0.000 -5.664
Polar
3z2-r2-11.328
x2-y2-7.528
xy2.426
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.500 0.294 0.000
y 0.294 7.644 0.000
z 0.000 0.000 3.309


<r2> (average value of r2) Å2
<r2> 81.317
(<r2>)1/2 9.018