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

using model chemistry: B3LYP/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 B3LYP/6-31+G**
 hartrees
Energy at 0K-226.219000
Energy at 298.15K-226.224976
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/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' 3680 3548 85.69      
2 A' 3286 3169 0.33      
3 A' 3270 3153 1.98      
4 A' 3259 3142 2.86      
5 A' 1570 1514 6.73      
6 A' 1485 1431 8.20      
7 A' 1432 1381 13.49      
8 A' 1389 1340 5.16      
9 A' 1284 1238 2.31      
10 A' 1181 1138 0.78      
11 A' 1147 1106 21.78      
12 A' 1059 1021 8.42      
13 A' 1051 1013 40.25      
14 A' 938 904 4.13      
15 A' 919 886 8.73      
16 A" 893 861 5.69      
17 A" 841 811 9.29      
18 A" 752 725 105.43      
19 A" 686 661 20.51      
20 A" 632 610 0.00      
21 A" 527 508 60.88      

Unscaled Zero Point Vibrational Energy (zpe) 15639.7 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 15079.8 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 B3LYP/6-31+G**
ABC
0.32031 0.31356 0.15845

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.107 0.731 0.000
C2 1.113 0.308 0.000
H3 1.267 -1.897 0.000
C4 0.665 -1.001 0.000
H5 -1.483 -1.685 0.000
C6 -0.746 -0.893 0.000
N7 -1.148 0.379 0.000
H8 -0.049 2.096 0.000
N9 0.000 1.089 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08022.75912.25314.32693.28313.27452.55222.1375
C21.08022.21031.38293.27252.21352.26272.13311.3604
H32.75912.21031.07972.75762.24933.31864.20483.2442
C42.25311.38291.07972.25431.41542.27863.17832.1933
H54.32693.27252.75762.25431.08132.09064.04413.1456
C63.28312.21352.24931.41541.08131.33413.07002.1184
N73.27452.26273.31862.27862.09061.33412.03951.3504
H82.55222.13314.20483.17834.04413.07002.03951.0083
N92.13751.36043.24422.19333.14562.11841.35041.0083

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 131.959 H1 C2 N9 121.870
C2 C4 H3 127.242 C2 C4 C6 104.555
C2 N9 N7 113.174 C2 N9 H8 127.847
H3 C4 C6 128.203 C4 C2 N9 106.171
C4 C6 H5 128.590 C4 C6 N7 111.896
H5 C6 N7 119.515 C6 N7 N9 104.204
N7 N9 H8 118.979
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.149     0.131
2 C -0.196     -0.055
3 H 0.134     0.167
4 C 0.045     -0.325
5 H 0.136     0.097
6 C -0.178     0.195
7 N -0.198     -0.489
8 H 0.315     0.294
9 N -0.206     -0.015


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.263 0.818 0.000 2.407
CHELPG        
AIM        
ESP 2.242 0.786 0.000 2.376


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.449 2.713 0.000
y 2.713 -22.445 0.000
z 0.000 0.000 -32.578
Traceless
 xyz
x -2.938 2.713 0.000
y 2.713 9.068 0.000
z 0.000 0.000 -6.131
Polar
3z2-r2-12.261
x2-y2-8.004
xy2.713
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.993 0.155 -0.002
y 0.155 7.936 0.001
z -0.002 0.001 4.662


<r2> (average value of r2) Å2
<r2> 80.745
(<r2>)1/2 8.986