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: B1B95/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-226.130715
Energy at 298.15K-226.136740
Nuclear repulsion energy163.493281
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-pVDZ
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' 3675 3533 84.20      
2 A' 3301 3173 0.34      
3 A' 3281 3154 1.34      
4 A' 3263 3136 3.77      
5 A' 1586 1524 5.47      
6 A' 1508 1450 4.36      
7 A' 1459 1402 14.46      
8 A' 1403 1349 1.44      
9 A' 1281 1231 4.95      
10 A' 1210 1163 3.11      
11 A' 1155 1110 13.97      
12 A' 1059 1018 39.63      
13 A' 1049 1009 8.83      
14 A' 929 893 4.16      
15 A' 910 875 9.26      
16 A" 898 863 4.32      
17 A" 845 812 7.73      
18 A" 757 727 74.01      
19 A" 701 673 23.77      
20 A" 640 615 0.01      
21 A" 556 534 45.37      

Unscaled Zero Point Vibrational Energy (zpe) 15731.8 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 15121.4 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-pVDZ
ABC
0.32433 0.31594 0.16004

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.105 0.731 0.000
C2 1.108 0.303 0.000
H3 1.262 -1.903 0.000
C4 0.660 -1.001 0.000
H5 -1.489 -1.675 0.000
C6 -0.744 -0.884 0.000
N7 -1.140 0.384 0.000
H8 -0.041 2.088 0.000
N9 0.000 1.079 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08492.76532.25554.32513.27523.26382.53932.1339
C21.08492.21131.37893.26482.20012.24972.12261.3528
H32.76532.21131.08432.76032.25023.31664.19783.2377
C42.25551.37891.08432.25231.40922.27133.16722.1820
H54.32513.26482.76032.25231.08662.08864.03183.1307
C63.27522.20012.25021.40921.08661.32833.05362.0990
N73.26382.24973.31662.27132.08861.32832.02731.3350
H82.53932.12264.19783.16724.03183.05362.02731.0097
N92.13391.35283.23772.18203.13072.09901.33501.0097

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 132.182 H1 C2 N9 121.795
C2 C4 H3 127.313 C2 C4 C6 104.200
C2 N9 N7 113.653 C2 N9 H8 127.314
H3 C4 C6 128.487 C4 C2 N9 106.023
C4 C6 H5 128.495 C4 C6 N7 112.103
H5 C6 N7 119.401 C6 N7 N9 104.021
N7 N9 H8 119.032
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.013      
2 C 0.141      
3 H -0.013      
4 C -0.150      
5 H 0.002      
6 C 0.120      
7 N -0.196      
8 H 0.109      
9 N -0.027      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.953 1.036 0.000 2.210
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.243 2.344 0.000
y 2.344 -21.968 0.000
z 0.000 0.000 -31.287
Traceless
 xyz
x -2.616 2.344 0.000
y 2.344 8.297 0.000
z 0.000 0.000 -5.681
Polar
3z2-r2-11.362
x2-y2-7.275
xy2.344
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.027 0.333 0.000
y 0.333 7.260 0.000
z 0.000 0.000 2.875


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