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 NH2CONHC2H5 (Urea, ethyl-)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-303.121873
Energy at 298.15K-303.132501
HF Energy-302.131753
Nuclear repulsion energy244.258350
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 MP2/6-311G**
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 3735 3549 28.73      
2 A 3641 3459 25.00      
3 A 3615 3435 22.40      
4 A 3182 3024 19.58      
5 A 3170 3012 27.67      
6 A 3104 2949 27.03      
7 A 3080 2927 15.50      
8 A 3058 2906 36.24      
9 A 1835 1744 435.92      
10 A 1638 1557 148.17      
11 A 1548 1470 2.60      
12 A 1525 1449 3.90      
13 A 1515 1440 7.01      
14 A 1480 1406 23.30      
15 A 1443 1371 178.26      
16 A 1431 1360 74.22      
17 A 1376 1308 28.72      
18 A 1322 1256 7.33      
19 A 1219 1158 19.53      
20 A 1179 1120 2.13      
21 A 1149 1092 31.51      
22 A 1089 1035 17.53      
23 A 1005 955 4.13      
24 A 913 868 1.84      
25 A 834 792 1.07      
26 A 791 752 74.04      
27 A 649 616 31.32      
28 A 611 580 206.85      
29 A 564 536 23.16      
30 A 511 485 49.70      
31 A 424 402 54.21      
32 A 366 348 0.24      
33 A 286 272 2.63      
34 A 203 193 1.51      
35 A 117 111 9.04      
36 A 67 64 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 26835.5 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 25499.1 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 MP2/6-311G**
ABC
0.28326 0.06740 0.05616

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.611 -0.213 -0.005
H2 -2.677 -1.075 0.666
H3 -3.424 0.473 0.242
H4 -2.744 -0.562 -1.032
C5 -1.262 0.478 0.146
H6 -1.237 1.352 -0.514
H7 -1.130 0.839 1.174
N8 -0.198 -0.445 -0.235
H9 -0.391 -1.420 -0.049
N10 1.450 1.180 0.040
H11 2.441 1.342 -0.064
H12 0.879 1.797 -0.519
C13 1.147 -0.176 -0.030
O14 1.984 -1.052 0.099

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 N8 H9 N10 H11 H12 C13 O14
C11.09441.09261.09301.52282.14452.16552.43502.52674.29365.28644.05983.75754.6715
H21.09441.77051.77532.16453.05972.51322.71252.42014.74505.70744.72213.98914.6953
H31.09261.77051.77682.16442.47612.50303.38843.58724.92975.93764.56624.62475.6208
H41.09301.77531.77682.16012.49143.07192.67112.69074.66685.60864.35404.03664.8863
C51.52282.16452.16442.16011.09601.09801.45922.09702.80373.80872.60102.50203.5886
H62.14453.05972.47612.49141.09601.76752.09482.93552.74883.70562.16192.87274.0658
H72.16552.51322.50303.07191.09801.76752.12252.67342.83933.81332.79622.76843.7988
N82.43502.71253.38842.67111.45922.09482.12251.01112.33073.19172.50291.38622.2890
H92.52672.42013.58722.69072.09702.93552.67341.01113.18733.95613.49001.97762.4076
N104.29364.74504.92974.66682.80372.74882.83932.33073.18731.00961.00891.39202.2963
H115.28645.70745.93765.60863.80873.70563.81333.19173.95611.00961.68961.99582.4431
H124.05984.72214.56624.35402.60102.16192.79622.50293.49001.00891.68962.05043.1176
C133.75753.98914.62474.03662.50202.87272.76841.38621.97761.39201.99582.05041.2185
O144.67154.69535.62084.88633.58864.06583.79882.28902.40762.29632.44313.11761.2185

picture of Urea, ethyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 108.853 C1 C5 H7 110.386
C1 C5 N8 109.466 H2 C1 H3 108.105
H2 C1 H4 108.514 H2 C1 C5 110.520
H3 C1 H4 108.768 H3 C1 C5 110.616
H4 C1 C5 110.251 C5 N8 H9 114.971
C5 N8 C13 123.103 H6 C5 H7 107.345
H6 C5 N8 109.312 H7 C5 N8 111.419
N8 C13 N10 114.060 N8 C13 O14 122.865
H9 N8 C13 110.181 N10 C13 O14 123.066
H11 N10 H12 113.659 H11 N10 C13 111.416
H12 N10 C13 116.396
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability