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

using model chemistry: MP2/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/TZVP
 hartrees
Energy at 0K-225.646055
Energy at 298.15K-225.651580
HF Energy-224.884269
Nuclear repulsion energy163.225142
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/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' 3684 3492 76.16      
2 A' 3331 3157 0.63      
3 A' 3307 3134 0.60      
4 A' 3304 3131 3.31      
5 A' 1548 1468 7.18      
6 A' 1513 1434 21.18      
7 A' 1466 1389 19.17      
8 A' 1377 1306 8.08      
9 A' 1293 1226 1.11      
10 A' 1183 1121 4.12      
11 A' 1162 1102 4.07      
12 A' 1113 1055 25.69      
13 A' 1092 1035 27.83      
14 A' 943 893 2.08      
15 A' 906 859 5.63      
16 A" 747 708 80.22      
17 A" 702 666 16.12      
18 A" 663 629 3.97      
19 A" 634 601 0.98      
20 A" 546 518 45.23      
21 A" 259 246 48.93      

Unscaled Zero Point Vibrational Energy (zpe) 15386.4 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 14584.8 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 MP2/TZVP
ABC
0.32661 0.31248 0.15969

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.103 0.000
C2 -1.089 0.282 0.000
C3 1.117 0.304 0.000
N4 -0.740 -0.991 0.000
C5 0.635 -0.982 0.000
H6 -0.012 2.111 0.000
H7 -2.098 0.661 0.000
H8 2.114 0.709 0.000
H9 1.199 -1.899 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36401.37352.22102.18021.00772.14392.15043.2333
C21.36402.20651.32012.13822.12211.07723.23143.1619
C31.37352.20652.26411.37422.13073.23461.07572.2051
N42.22101.32012.26411.37473.18582.13813.32162.1416
C52.18022.13821.37421.37473.16043.18862.24681.0768
H61.00772.12212.13073.18583.16042.53992.54704.1893
H72.14391.07723.23462.13813.18862.53994.21194.1744
H82.15043.23141.07573.32162.24682.54704.21192.7637
H93.23333.16192.20512.14161.07684.18934.17442.7637

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 111.666 N1 C2 H7 122.417
N1 C3 C5 105.023 N1 C3 H8 122.342
C2 N1 C3 107.419 C2 N1 H6 126.301
C2 N4 C5 104.997 C3 N1 H6 126.280
C3 C5 N4 110.896 C3 C5 H9 127.820
N4 C2 H7 125.917 N4 C5 H9 121.284
C5 C3 H8 132.635
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability