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All results from a given calculation for C4H5N (Pyrrole)

using model chemistry: QCISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-209.663762
Energy at 298.15K 
HF Energy-208.831423
Nuclear repulsion energy161.144275
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 QCISD/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3758 3560 76.50      
2 A1 3318 3144 0.29      
3 A1 3296 3122 1.95      
4 A1 1536 1455 9.08      
5 A1 1445 1369 5.13      
6 A1 1187 1125 2.80      
7 A1 1112 1054 11.11      
8 A1 1051 996 24.27      
9 A1 901 854 0.19      
10 A2 876 830 0.00      
11 A2 718 680 0.00      
12 A2 627 594 0.00      
13 B1 844 800 2.16      
14 B1 761 721 115.19      
15 B1 644 610 0.59      
16 B1 463 438 75.82      
17 B2 3310 3136 3.47      
18 B2 3285 3112 1.87      
19 B2 1612 1527 5.30      
20 B2 1494 1415 10.99      
21 B2 1330 1260 1.35      
22 B2 1185 1122 1.53      
23 B2 1091 1033 17.40      
24 B2 878 832 1.31      

Unscaled Zero Point Vibrational Energy (zpe) 18359.9 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 17394.2 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 QCISD/6-31G(2df,p)
ABC
0.30592 0.30206 0.15199

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.119
H2 0.000 0.000 2.121
C3 0.000 1.122 0.330
C4 0.000 -1.122 0.330
C5 0.000 0.714 -0.981
C6 0.000 -0.714 -0.981
H7 0.000 2.106 0.767
H8 0.000 -2.106 0.767
H9 0.000 1.361 -1.843
H10 0.000 -1.361 -1.843

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00191.37161.37162.21812.21812.13532.13533.26003.2600
H21.00192.11362.11363.18313.18312.50382.50384.19134.1913
C31.37162.11362.24331.37262.25551.07733.25732.18593.2993
C41.37162.11362.24332.25551.37263.25731.07733.29932.1859
C52.21813.18311.37262.25551.42802.23473.31801.07802.2472
C62.21813.18312.25551.37261.42803.31802.23472.24721.0780
H72.13532.50381.07733.25732.23473.31804.21232.71434.3400
H82.13532.50383.25731.07733.31802.23474.21234.34002.7143
H93.26004.19132.18593.29931.07802.24722.71434.34002.7226
H103.26004.19133.29932.18592.24721.07804.34002.71432.7226

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.863 N1 C3 H7 120.904
N1 C4 C6 107.863 N1 C4 H8 120.904
H2 N1 C3 125.139 H2 N1 C4 125.139
C3 N1 C4 109.721 C3 C5 C6 107.276
C3 C5 H9 125.823 C4 C6 C5 107.276
C4 C6 H10 125.823 C5 C3 H7 131.233
C5 C6 H10 126.901 C6 C4 H8 131.233
C6 C5 H9 126.901
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability