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All results from a given calculation for C4H7NO (2-Pyrrolidinone)

using model chemistry: QCISD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-285.845939
Energy at 298.15K 
HF Energy-284.898119
Nuclear repulsion energy239.323100
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/6-31+G**
Rotational Constants (cm-1) from geometry optimized at QCISD/6-31+G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.081 -1.098 -0.099
C2 0.899 0.001 -0.009
C3 -0.009 1.219 0.144
C4 -1.408 0.690 -0.201
C5 -1.328 -0.808 0.151
O6 2.125 -0.011 -0.035
H7 0.481 -2.019 -0.011
H8 0.058 1.551 1.184
H9 0.336 2.034 -0.490
H10 -2.210 1.196 0.338
H11 -1.595 0.800 -1.271
H12 -1.595 -0.986 1.198
H13 -1.972 -1.423 -0.479

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13
N11.37312.33172.32951.45972.31631.00792.94313.16713.27082.79052.12222.1125
C21.37311.52672.41552.37441.22682.06282.12892.16353.34812.90702.94193.2384
C32.33171.52671.53562.41852.46983.27871.09381.08872.20952.16712.91443.3497
C42.32952.41551.53561.54093.60643.30862.19322.22131.08981.09192.19192.2043
C51.45972.37442.41851.54093.54872.18312.92443.35522.19702.16271.09601.0903
O62.31631.22682.46983.60643.54872.59522.86332.75514.51524.00354.03934.3559
H71.00792.06283.27873.30862.18312.59523.78814.08404.20683.72092.61562.5673
H82.94312.12891.09382.19322.92442.86333.78811.76462.44653.05413.02853.9657
H93.16712.16351.08872.22133.35522.75514.08401.76462.80532.42213.96314.1566
H103.27083.34812.20951.08982.19704.51524.20682.44652.80531.76712.42492.7531
H112.79052.90702.16711.09192.16274.00353.72093.05412.42211.76713.04782.3892
H122.12222.94192.91442.19191.09604.03932.61563.02853.96312.42493.04781.7733
H132.11253.23843.34972.20431.09034.35592.56733.96574.15662.75312.38921.7733

picture of 2-Pyrrolidinone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 106.927 N1 C2 O6 125.886
N1 C5 C4 101.823 N1 C5 H12 111.484
N1 C5 H13 111.050 C2 N1 C5 113.865
C2 N1 H7 119.284 C2 C3 C4 104.147
C2 C3 H8 107.513 C2 C3 H9 110.511
C3 C2 O6 127.183 C3 C4 C5 103.649
C3 C4 H10 113.529 C3 C4 H11 109.986
C4 C3 H8 111.956 C4 C3 H9 114.583
C4 C5 H12 111.340 C4 C5 H13 112.682
C5 N1 H7 123.391 C5 C4 H10 112.125
C5 C4 H11 109.274 H8 C3 H9 107.907
H10 C4 H11 108.186 H12 C5 H13 108.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability