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

using model chemistry: MP2=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/TZVP
 hartrees
Energy at 0K-225.731934
Energy at 298.15K-225.737486
HF Energy-224.884482
Nuclear repulsion energy163.338713
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 MP2=FULL/TZVP
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' 3683 3509 76.55      
2 A' 3330 3173 0.59      
3 A' 3306 3150 0.62      
4 A' 3303 3147 3.26      
5 A' 1550 1476 7.29      
6 A' 1514 1443 21.10      
7 A' 1467 1398 19.05      
8 A' 1379 1314 8.15      
9 A' 1295 1234 1.11      
10 A' 1185 1129 4.09      
11 A' 1163 1108 4.02      
12 A' 1114 1061 26.12      
13 A' 1093 1042 27.80      
14 A' 944 899 2.06      
15 A' 908 865 5.66      
16 A" 751 715 77.90      
17 A" 707 673 17.30      
18 A" 665 634 4.03      
19 A" 638 608 1.31      
20 A" 553 527 45.32      
21 A" 271 258 49.48      

Unscaled Zero Point Vibrational Energy (zpe) 15409.0 cm-1
Scaled (by 0.9527) Zero Point Vibrational Energy (zpe) 14680.2 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 MP2=FULL/TZVP
ABC
0.32705 0.31294 0.15992

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.103 0.000
C2 -1.088 0.282 0.000
C3 1.116 0.304 0.000
N4 -0.739 -0.990 0.000
C5 0.634 -0.982 0.000
H6 -0.012 2.110 0.000
H7 -2.096 0.661 0.000
H8 2.112 0.708 0.000
H9 1.199 -1.898 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36311.37252.21932.17881.00752.14252.14903.2312
C21.36312.20491.31912.13672.12111.07663.22923.1598
C31.37252.20492.26221.37332.12963.23231.07502.2037
N42.21931.31912.26221.37373.18412.13673.31902.1402
C52.17882.13671.37331.37373.15873.18652.24511.0761
H61.00752.12112.12963.18413.15872.53862.54564.1870
H72.14251.07663.23232.13673.18652.53864.20914.1717
H82.14903.22921.07503.31902.24512.54564.20912.7617
H93.23123.15982.20372.14021.07614.18704.17172.7617

picture of 1H-Imidazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 N4 111.660 N1 C2 H7 122.419
N1 C3 C5 105.033 N1 C3 H8 122.349
C2 N1 C3 107.414 C2 N1 H6 126.306
C2 N4 C5 105.009 C3 N1 H6 126.281
C3 C5 N4 110.884 C3 C5 H9 127.824
N4 C2 H7 125.920 N4 C5 H9 121.292
C5 C3 H8 132.618
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability