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 C4H9N (Pyrrolidine)

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 CS 1A'
Energy calculated at MP2/CEP-121G*
 hartrees
Energy at 0K-37.560636
Energy at 298.15K-37.572174
HF Energy-36.867658
Nuclear repulsion energy106.463027
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' 3515 3349 0.48      
2 A' 3171 3022 67.30      
3 A' 3133 2985 10.07      
4 A' 3104 2958 48.90      
5 A' 2987 2846 145.32      
6 A' 1562 1488 0.42      
7 A' 1539 1466 5.17      
8 A' 1414 1347 1.14      
9 A' 1342 1279 1.80      
10 A' 1255 1196 0.94      
11 A' 1244 1185 8.16      
12 A' 1086 1035 0.48      
13 A' 1015 967 5.76      
14 A' 956 911 2.12      
15 A' 925 881 22.03      
16 A' 909 866 59.74      
17 A' 776 739 20.93      
18 A' 581 554 39.61      
19 A' 312 297 6.16      
20 A" 3152 3003 3.13      
21 A" 3130 2982 65.35      
22 A" 3093 2947 27.60      
23 A" 2985 2844 43.07      
24 A" 1544 1471 0.35      
25 A" 1519 1447 1.03      
26 A" 1442 1374 4.97      
27 A" 1338 1275 13.70      
28 A" 1296 1235 14.11      
29 A" 1259 1200 5.82      
30 A" 1199 1142 1.30      
31 A" 1138 1084 8.36      
32 A" 1111 1059 1.07      
33 A" 949 904 0.68      
34 A" 876 835 2.46      
35 A" 618 588 0.94      
36 A" 75 72 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 28773.9 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 27415.8 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/CEP-121G*
ABC
0.22766 0.22480 0.12972

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.578 -1.088 0.000
H2 0.449 -2.103 0.000
C3 -0.101 -0.472 1.159
C4 -0.101 -0.472 -1.159
C5 -0.101 1.027 0.780
C6 -0.101 1.027 -0.780
H7 -1.142 -0.828 1.275
H8 -1.142 -0.828 -1.275
H9 0.444 -0.681 2.085
H10 0.444 -0.681 -2.085
H11 0.802 1.512 1.164
H12 0.802 1.512 -1.164
H13 -0.969 1.547 1.199
H14 -0.969 1.547 -1.199

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
N11.02271.47801.47802.35522.35522.15702.15702.12872.12872.85822.85823.28293.2829
H21.02272.07502.07503.27253.27252.40422.40422.52362.52363.81443.81444.09494.0949
C31.47802.07502.31731.54602.45081.10642.67121.09533.29602.17963.18542.19763.2228
C41.47802.07502.31732.45081.54602.67121.10643.29601.09533.18542.17963.22282.1976
C52.35523.27251.54602.45081.56062.18442.95852.21803.38051.09442.19821.09502.2230
C62.35523.27252.45081.54601.56062.95852.18443.38052.21802.19821.09442.22301.0950
H72.15702.40421.10642.67122.18442.95852.55081.78673.71893.04443.89982.38263.4343
H82.15702.40422.67121.10642.95852.18442.55083.71891.78673.89983.04443.43432.3826
H92.12872.52361.09533.29602.21803.38051.78673.71894.17032.40583.93692.78354.2130
H102.12872.52363.29601.09533.38052.21803.71891.78674.17033.93692.40584.21302.7835
H112.85823.81442.17963.18541.09442.19823.04443.89982.40583.93692.32871.77182.9536
H122.85823.81443.18542.17962.19821.09443.89983.04443.93692.40582.32872.95361.7718
H133.28294.09492.19763.22281.09502.22302.38263.43432.78354.21301.77182.95362.3982
H143.28294.09493.22282.19762.22301.09503.43432.38264.21302.78352.95361.77182.3982

picture of Pyrrolidine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 102.290 N1 C3 H7 112.363
N1 C3 H9 110.758 N1 C4 C6 102.290
N1 C4 H8 112.363 N1 C4 H10 110.758
H2 N1 C3 110.839 H2 N1 C4 110.839
C3 N1 C4 103.247 C3 C5 C6 104.165
C3 C5 H11 110.105 C3 C5 H13 111.489
C4 C6 C5 104.165 C4 C6 H12 110.105
C4 C6 H14 111.489 C5 C3 H7 109.782
C5 C3 H9 113.126 C5 C6 H12 110.542
C5 C6 H14 112.486 C6 C4 H8 109.782
C6 C4 H10 113.126 C6 C5 H11 110.542
C6 C5 H13 112.486 H7 C3 H9 108.493
H8 C4 H10 108.493 H11 C5 H13 108.045
H12 C6 H14 108.045
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability