return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H7N (1H-Pyrrole, 1-methyl-)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-41.613684
Energy at 298.15K-41.620876
HF Energy-41.063491
Nuclear repulsion energy115.001270
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/CEP-121G
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 3222 3144 3.91      
2 A 3208 3131 17.63      
3 A 3194 3118 10.51      
4 A 3184 3107 1.37      
5 A 3112 3037 18.43      
6 A 3085 3011 30.94      
7 A 2981 2910 68.93      
8 A 1544 1507 8.49      
9 A 1526 1490 12.49      
10 A 1507 1471 16.45      
11 A 1487 1451 0.39      
12 A 1465 1430 34.85      
13 A 1394 1360 2.20      
14 A 1393 1360 6.29      
15 A 1293 1262 0.02      
16 A 1284 1253 46.34      
17 A 1162 1134 7.44      
18 A 1115 1088 11.47      
19 A 1110 1084 14.87      
20 A 1067 1042 10.59      
21 A 1055 1030 10.31      
22 A 964 941 7.87      
23 A 884 863 0.01      
24 A 665 649 50.82      
25 A 653 637 3.76      
26 A 650 634 19.47      
27 A 625 610 101.33      
28 A 573 559 0.72      
29 A 531 518 0.11      
30 A 353 345 0.78      
31 A 191 187 4.87      
32 A 155 151 0.26      
33 A 77 75 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 23354.5 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 22794.0 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/CEP-121G
ABC
0.27697 0.11345 0.08178

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.082 0.000 0.023
H2 -2.460 0.900 -0.484
H3 -2.461 -0.889 -0.502
H4 -2.441 -0.010 1.065
C5 1.567 -0.727 0.019
H6 2.438 -1.379 0.009
C7 1.568 0.726 0.012
H8 2.438 1.379 0.022
C9 0.215 1.151 -0.011
H10 -0.225 2.146 -0.025
C11 0.215 -1.151 -0.016
H12 -0.225 -2.146 -0.016
N13 -0.599 0.000 -0.035

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 C9 H10 C11 H12 N13
C11.09981.09981.10233.72144.72643.72174.72662.57012.83902.56992.83831.4847
H21.09981.78981.79664.37305.42554.06224.94822.72872.60033.40353.80712.1159
H31.09981.78981.79664.06554.95044.37125.42483.40123.80072.73252.61042.1162
H41.10231.79661.79664.20375.17614.20955.17933.09223.27883.08593.26162.1453
C53.72144.37304.06554.20371.08831.45292.27882.31413.38621.41792.28692.2855
H64.72645.42554.95045.17611.08832.27852.75853.36824.41832.23502.77183.3359
C73.72174.06224.37124.20951.45292.27851.08831.41782.28702.31413.38622.2855
H84.72664.94825.42485.17932.27882.75851.08832.23512.77183.36854.41873.3362
C92.57012.72873.40123.09222.31413.36821.41782.23511.08812.30213.32651.4100
H102.83902.60033.80073.27883.38624.41832.28702.77181.08813.32654.29242.1785
C112.56993.40352.73253.08591.41792.23502.31413.36852.30213.32651.08821.4099
H122.83833.80712.61043.26162.28692.77183.38624.41873.32654.29241.08822.1786
N131.48472.11592.11622.14532.28553.33592.28553.33621.41002.17851.40992.1786

picture of 1H-Pyrrole, 1-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N13 C9 125.198 C1 N13 C11 125.184
H2 C1 H3 108.914 H2 C1 H4 109.342
H2 C1 N13 109.003 H3 C1 H4 109.344
H3 C1 N13 109.018 H4 C1 N13 111.185
C5 C7 H8 126.868 C5 C7 C9 107.427
C5 C11 H12 131.279 C5 C11 N13 107.848
H6 C5 C7 126.835 H6 C5 C11 125.690
C7 C5 C11 107.424 C7 C9 H10 131.293
C7 C9 N13 107.846 H8 C7 C9 125.705
C9 N13 C11 109.450 H10 C9 N13 120.856
H12 C11 N13 120.867
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability