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: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-247.758974
Energy at 298.15K-247.767305
HF Energy-246.988215
Nuclear repulsion energy181.080824
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*
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' 3204 3051 0.93      
2 A' 3157 3007 19.47      
3 A' 3059 2913 49.77      
4 A' 3050 2905 44.29      
5 A' 3015 2871 84.65      
6 A' 1809 1723 407.60      
7 A' 1585 1510 19.71      
8 A' 1555 1481 13.17      
9 A' 1514 1441 7.00      
10 A' 1483 1413 60.12      
11 A' 1477 1406 12.67      
12 A' 1460 1390 59.05      
13 A' 1328 1265 39.23      
14 A' 1127 1073 116.92      
15 A' 1110 1057 2.43      
16 A' 900 857 2.33      
17 A' 670 638 7.45      
18 A' 400 381 1.34      
19 A' 332 316 12.13      
20 A" 3115 2967 20.25      
21 A" 3109 2960 49.41      
22 A" 1548 1474 14.30      
23 A" 1526 1453 3.49      
24 A" 1203 1146 3.81      
25 A" 1156 1100 0.03      
26 A" 1035 986 0.75      
27 A" 330 314 21.24      
28 A" 228 218 2.58      
29 A" 165 157 0.48      
30 A" 84 80 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 22864.9 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 21774.3 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*
ABC
0.29761 0.13877 0.09818

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.702 -0.821 0.000
O2 0.215 -1.945 0.000
N3 0.000 0.348 0.000
C4 -1.453 0.328 0.000
C5 0.658 1.640 0.000
H6 1.797 -0.654 0.000
H7 -1.777 -0.715 0.000
H8 -1.844 0.835 0.893
H9 -1.844 0.835 -0.893
H10 1.744 1.500 0.000
H11 0.380 2.220 -0.891
H12 0.380 2.220 0.891

Atom - Atom Distances (Å)
  C1 O2 N3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.22491.36422.44252.46191.10692.48123.16593.16592.54413.18533.1853
O21.22492.30322.81893.61252.04192.34073.57243.57243.76904.26224.2622
N31.36422.30321.45311.44992.05702.07022.10552.10552.09002.10762.1076
C42.44252.81891.45312.48583.39451.09151.09851.09853.40522.78132.7813
C52.46193.61251.44992.48582.56093.38722.77572.77571.09521.09891.0989
H61.10692.04192.05703.39452.56093.57364.03304.03302.15413.32513.3251
H72.48122.34072.07021.09153.38723.57361.78961.78964.15923.74943.7494
H83.16593.57242.10551.09852.77574.03301.78961.78523.75663.16982.6201
H93.16593.57242.10551.09852.77574.03301.78961.78523.75662.62013.1698
H102.54413.76902.09003.40521.09522.15414.15923.75663.75661.78121.7812
H113.18534.26222.10762.78131.09893.32513.74943.16982.62011.78121.7829
H123.18534.26222.10762.78131.09893.32513.74942.62013.16981.78121.7829

picture of dimethylformamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 C4 120.180 C1 N3 C5 122.021
O2 C1 N3 125.554 O2 C1 H6 122.165
N3 C1 H6 112.281 N3 C4 H7 108.050
N3 C4 H8 110.441 N3 C4 H9 110.441
N3 C5 H10 109.622 N3 C5 H11 110.809
N3 C5 H12 110.809 C4 N3 C5 117.798
H7 C4 H8 109.604 H7 C4 H9 109.604
H8 C4 H9 108.690 H10 C5 H11 108.552
H10 C5 H12 108.552 H11 C5 H12 108.433
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability