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

using model chemistry: MP4/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/cc-pVTZ
 hartrees
Energy at 0K-225.839475
Energy at 298.15K-225.845413
HF Energy-224.893060
Nuclear repulsion energy162.781572
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 MP4/cc-pVTZ
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' 3672 3559        
2 A' 3286 3185        
3 A' 3259 3158        
4 A' 3256 3156        
5 A' 1535 1488        
6 A' 1497 1450        
7 A' 1439 1395        
8 A' 1353 1312        
9 A' 1271 1232        
10 A' 1153 1117        
11 A' 1142 1106        
12 A' 1091 1057        
13 A' 1071 1038        
14 A' 928 900        
15 A' 892 865        
16 A" 854 828        
17 A" 810 785        
18 A" 722 700        
19 A" 675 654        
20 A" 640 621        
21 A" 503 487        

Unscaled Zero Point Vibrational Energy (zpe) 15524.3 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 15046.2 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 MP4/cc-pVTZ
ABC
0.32463 0.31081 0.15878

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.108 0.000
C2 -1.091 0.284 0.000
C3 1.121 0.303 0.000
N4 -0.746 -0.993 0.000
C5 0.638 -0.985 0.000
H6 -0.011 2.113 0.000
H7 -2.099 0.665 0.000
H8 2.118 0.709 0.000
H9 1.203 -1.903 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.36691.37992.22862.18771.00542.14572.15533.2417
C21.36692.21171.32202.14382.12411.07843.23673.1685
C31.37992.21172.27231.37602.13493.24071.07642.2073
N42.22861.32202.27231.38313.19122.13983.33102.1506
C52.18772.14381.37601.38313.16533.19572.24981.0777
H61.00542.12412.13493.19123.16532.54142.55054.1951
H72.14571.07843.24072.13983.19572.54144.21774.1828
H82.15533.23671.07643.33102.24982.55054.21772.7672
H93.24173.16852.20732.15061.07774.19514.18282.7672

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 111.949 N1 C2 H7 122.239
N1 C3 C5 105.088 N1 C3 H8 122.192
C2 N1 C3 107.261 C2 N1 H6 126.440
C2 N4 C5 104.819 C3 N1 H6 126.298
C3 C5 N4 110.882 C3 C5 H9 127.778
N4 C2 H7 125.813 N4 C5 H9 121.339
C5 C3 H8 132.720
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability