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

using model chemistry: CCSD=FULL/aug-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 CCSD=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-225.633473
Energy at 298.15K-225.639446
HF Energy-224.845782
Nuclear repulsion energy162.151050
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 CCSD=FULL/aug-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' 3700 3700 67.18      
2 A' 3311 3311 1.29      
3 A' 3285 3285 0.52      
4 A' 3282 3282 3.59      
5 A' 1578 1578 9.29      
6 A' 1525 1525 24.87      
7 A' 1469 1469 18.73      
8 A' 1381 1381 5.90      
9 A' 1284 1284 0.31      
10 A' 1161 1161 7.17      
11 A' 1151 1151 1.87      
12 A' 1103 1103 12.96      
13 A' 1078 1078 37.90      
14 A' 940 940 1.61      
15 A' 903 903 5.43      
16 A" 863 863 1.44      
17 A" 834 834 38.03      
18 A" 736 736 46.17      
19 A" 674 674 3.53      
20 A" 636 636 11.47      
21 A" 509 509 88.79      

Unscaled Zero Point Vibrational Energy (zpe) 15700.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15700.7 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 CCSD=FULL/aug-cc-pVDZ
ABC
0.32122 0.30938 0.15759

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 1.111 0.000
C2 -1.094 0.285 0.000
C3 1.126 0.302 0.000
N4 -0.750 -0.991 0.000
C5 0.640 -0.990 0.000
H6 -0.014 2.120 0.000
H7 -2.112 0.668 0.000
H8 2.134 0.707 0.000
H9 1.208 -1.918 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 N4 C5 H6 H7 H8 H9
N11.37111.38692.23182.19681.00942.15812.17233.2609
C21.37112.22101.32172.15322.12981.08763.25633.1865
C31.38692.22102.27891.38072.14633.25941.08622.2214
N42.23181.32172.27891.39053.19722.14693.34712.1663
C52.19682.15321.38071.39053.17873.21382.26111.0874
H61.00942.12982.14633.19723.17872.55172.57154.2190
H72.15811.08763.25942.14693.21382.55174.24684.2086
H82.17233.25631.08623.34712.26112.57154.24682.7836
H93.26093.18652.22142.16631.08744.21904.20862.7836

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 111.939 N1 C2 H7 122.319
N1 C3 C5 105.074 N1 C3 H8 122.425
C2 N1 C3 107.273 C2 N1 H6 126.254
C2 N4 C5 105.076 C3 N1 H6 126.472
C3 C5 N4 110.638 C3 C5 H9 127.930
N4 C2 H7 125.742 N4 C5 H9 121.432
C5 C3 H8 132.501
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability