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 NH(CH3)CONH(CH3) (Urea, N,N'-dimethyl-)

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 C2 1A
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-303.041072
Energy at 298.15K-303.051301
HF Energy-302.056859
Nuclear repulsion energy248.155722
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
(Å4/u)
Dep P Dep U
1 A 3689 3473 17.85      
2 A 3237 3047 13.76      
3 A 3184 2998 11.55      
4 A 3101 2919 4.59      
5 A 1828 1721 221.41      
6 A 1577 1485 10.80      
7 A 1551 1460 0.12      
8 A 1525 1435 8.75      
9 A 1500 1412 3.30      
10 A 1234 1162 0.20      
11 A 1207 1136 0.40      
12 A 1172 1103 7.65      
13 A 947 891 0.11      
14 A 577 543 124.01      
15 A 459 432 34.98      
16 A 229 216 3.14      
17 A 199 187 0.16      
18 A 111 104 0.38      
19 B 3687 3471 10.61      
20 B 3236 3047 8.61      
21 B 3184 2998 56.99      
22 B 3100 2918 103.19      
23 B 1611 1517 337.43      
24 B 1565 1474 10.43      
25 B 1546 1455 71.99      
26 B 1503 1415 12.78      
27 B 1307 1230 209.55      
28 B 1189 1119 25.12      
29 B 1174 1105 12.25      
30 B 1075 1012 1.41      
31 B 767 722 58.84      
32 B 749 705 13.79      
33 B 512 482 101.14      
34 B 328 309 44.16      
35 B 126 119 7.56      
36 B 120 113 0.44      

Unscaled Zero Point Vibrational Energy (zpe) 27052.4 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 25467.1 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
0.32465 0.07273 0.06103

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.092
O2 0.000 0.000 1.318
N3 0.000 1.159 -0.672
N4 0.000 -1.159 -0.672
C5 -0.254 2.416 0.021
C6 0.254 -2.416 0.021
H7 -0.451 1.067 -1.569
H8 0.451 -1.067 -1.569
H9 -0.048 3.237 -0.664
H10 0.048 -3.237 -0.664
H11 0.417 2.484 0.872
H12 -0.417 -2.484 0.872
H13 -1.281 2.500 0.388
H14 1.281 -2.500 0.388

Atom - Atom Distances (Å)
  C1 O2 N3 N4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.22641.38811.38812.43032.43032.02442.02443.32443.32442.63682.63682.82422.8242
O21.22642.30282.30282.75382.75383.11043.11043.79583.79582.55772.55772.95862.9586
N31.38812.30282.31881.45723.65071.00842.44232.07834.39682.07643.97882.13534.0189
N41.38812.30282.31883.65071.45722.44231.00844.39682.07833.97882.07644.01892.1353
C52.43032.75381.45723.65074.85862.09423.89301.08885.70241.08614.97581.09325.1627
C62.43032.75383.65071.45724.85863.89302.09425.70241.08884.97581.08615.16271.0932
H72.02443.11041.00842.44232.09423.89302.31702.38564.42642.95294.30892.56294.4214
H82.02443.11042.44231.00843.89302.09422.31704.42642.38564.30892.95294.42142.5629
H93.32443.79582.07834.39681.08885.70242.38564.42646.47491.77285.93491.78005.9818
H103.32443.79584.39682.07835.70241.08884.42642.38566.47495.93491.77285.98181.7800
H112.63682.55772.07643.97881.08614.97582.95294.30891.77285.93495.03711.76545.0809
H122.63682.55773.97882.07644.97581.08614.30892.95295.93491.77285.03715.08091.7654
H132.82422.95862.13534.01891.09325.16272.56294.42141.78005.98181.76545.08095.6173
H142.82422.95864.01892.13535.16271.09324.42142.56295.98181.78005.08091.76545.6173

picture of Urea, N,N'-dimethyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 C5 117.314 C1 N3 H7 114.360
C1 N4 C6 117.314 C1 N4 H8 114.360
O2 C1 N3 123.357 O2 C1 N4 123.357
N3 C1 N4 113.285 N3 C5 H9 108.567
N3 C5 H11 108.577 N3 C5 H13 112.919
N4 C6 H10 108.567 N4 C6 H12 108.577
N4 C6 H14 112.919 C5 N3 H7 115.073
C6 N4 H8 115.073 H9 C5 H11 109.193
H9 C5 H13 109.328 H10 C6 H12 109.193
H10 C6 H14 109.328 H11 C5 H13 108.200
H12 C6 H14 108.200
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability