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 C3H7NO (dimethylformamide)

using model chemistry: CID/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-246.070521
Energy at 298.15K-246.079076
HF Energy-245.613075
Nuclear repulsion energy180.449043
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 CID/3-21G
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' 3235 3014 0.94      
2 A' 3188 2970 21.27      
3 A' 3111 2898 37.91      
4 A' 3102 2890 33.20      
5 A' 3068 2859 88.73      
6 A' 1795 1672 338.30      
7 A' 1650 1538 9.38      
8 A' 1628 1517 15.10      
9 A' 1564 1457 7.62      
10 A' 1534 1429 11.42      
11 A' 1512 1408 13.71      
12 A' 1477 1376 119.91      
13 A' 1320 1230 55.18      
14 A' 1145 1067 155.56      
15 A' 1134 1057 6.70      
16 A' 896 834 2.90      
17 A' 680 634 7.34      
18 A' 397 370 1.40      
19 A' 334 312 13.41      
20 A" 3157 2941 34.28      
21 A" 3150 2934 41.72      
22 A" 1624 1512 14.71      
23 A" 1601 1492 4.91      
24 A" 1243 1158 4.55      
25 A" 1196 1114 0.01      
26 A" 1113 1037 1.61      
27 A" 348 324 31.23      
28 A" 230 215 2.84      
29 A" 194 181 0.48      
30 A" 135 126 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23381.0 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 21781.7 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 CID/3-21G
ABC
0.29407 0.13793 0.09734

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.715 -0.813 0.000
O2 0.234 -1.946 0.000
N3 0.000 0.350 0.000
C4 -1.468 0.301 0.000
C5 0.647 1.663 0.000
H6 1.796 -0.630 0.000
H7 -1.754 -0.748 0.000
H8 -1.868 0.794 0.890
H9 -1.868 0.794 -0.890
H10 1.730 1.533 0.000
H11 0.364 2.235 -0.888
H12 0.364 2.235 0.888

Atom - Atom Distances (Å)
  C1 O2 N3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.23131.36572.45072.47651.09642.47003.16993.16992.55603.19373.1937
O21.23132.30852.81863.63242.04282.32083.56633.56633.78724.27614.2761
N31.36572.30851.46851.46302.04662.06962.11642.11642.09582.11442.1144
C42.45072.81861.46852.51513.39421.08751.09311.09313.42712.80732.8073
C52.47653.63241.46302.51512.56493.40242.80592.80591.09121.09351.0935
H61.09642.04282.04663.39422.56493.55214.03114.03112.16413.32403.3240
H72.47002.32082.06961.08753.40243.55211.78391.78394.16453.76423.7642
H83.16993.56632.11641.09312.80594.03111.78391.77923.78013.19642.6567
H93.16993.56632.11641.09312.80594.03111.78391.77923.78012.65673.1964
H102.55603.78722.09583.42711.09122.16414.16453.78013.78011.77451.7745
H113.19374.27612.11442.80731.09353.32403.76423.19642.65671.77451.7755
H123.19374.27612.11442.80731.09353.32403.76422.65673.19641.77451.7755

picture of dimethylformamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 C4 119.654 C1 N3 C5 122.172
O2 C1 N3 125.397 O2 C1 H6 122.609
N3 C1 H6 111.994 N3 C4 H7 107.189
N3 C4 H8 110.564 N3 C4 H9 110.564
N3 C5 H10 109.410 N3 C5 H11 110.773
N3 C5 H12 110.773 C4 N3 C5 118.174
H7 C4 H8 109.784 H7 C4 H9 109.784
H8 C4 H9 108.942 H10 C5 H11 108.636
H10 C5 H12 108.636 H11 C5 H12 108.555
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability