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All results from a given calculation for C2H6N2O (Urea, methyl-)

using model chemistry: QCISD/3-21G

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/3-21G
 hartrees
Energy at 0K-262.084248
Energy at 298.15K-262.092289
HF Energy-261.542272
Nuclear repulsion energy180.443890
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/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 3661 3548 20.61      
2 A 3593 3482 27.44      
3 A 3539 3430 19.58      
4 A 3101 3006 18.47      
5 A 3044 2950 38.84      
6 A 2996 2904 43.19      
7 A 1755 1701 300.46      
8 A 1701 1649 105.74      
9 A 1607 1557 15.76      
10 A 1567 1519 4.54      
11 A 1523 1476 31.17      
12 A 1481 1436 3.49      
13 A 1398 1355 266.18      
14 A 1206 1169 2.37      
15 A 1186 1150 1.32      
16 A 1130 1095 40.97      
17 A 1074 1041 41.42      
18 A 870 843 4.24      
19 A 777 753 104.91      
20 A 593 575 90.83      
21 A 553 536 136.36      
22 A 535 519 8.87      
23 A 482 467 21.46      
24 A 354 343 196.12      
25 A 280 271 21.13      
26 A 138 134 7.35      
27 A 105 102 5.95      

Unscaled Zero Point Vibrational Energy (zpe) 20123.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 19504.1 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/3-21G
ABC
0.32127 0.13562 0.09800

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.892 0.029 0.094
H2 -2.162 0.694 -0.742
H3 -2.691 -0.716 0.199
H4 -1.841 0.628 1.016
H5 -0.618 -1.697 -0.141
N6 -0.622 -0.684 -0.155
C7 0.638 -0.109 -0.022
H8 -0.135 1.813 -0.422
H9 1.525 1.732 0.057
N10 0.614 1.289 0.014
O11 1.688 -0.777 0.073

Atom - Atom Distances (Å)
  C1 H2 H3 H4 H5 N6 C7 H8 H9 N10 O11
C11.10261.09721.10052.15881.47782.53702.55683.81802.80623.6698
H21.10261.77601.78922.90952.14823.00092.33723.91242.93804.2013
H31.09721.77601.78752.31942.09963.39173.64884.87703.87004.3815
H41.10051.78921.78752.87112.13992.78702.52653.66992.73283.9135
H52.15882.90952.31942.87111.01362.02893.55484.04843.23432.4921
N61.47782.14822.09962.13991.01361.39192.55813.23882.33442.3233
C72.53703.00093.39172.78702.02891.39192.11002.04441.39841.2479
H82.55682.33723.64882.52653.55482.55812.11001.72951.01303.2059
H93.81803.91244.87703.66994.04843.23882.04441.72951.01362.5140
N102.80622.93803.87002.73283.23432.33441.39841.01301.01362.3292
O113.66984.20134.38153.91352.49212.32331.24793.20592.51402.3292

picture of Urea, methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N6 H5 118.925 C1 N6 C7 124.244
H2 C1 H3 107.683 H2 C1 H4 108.608
H2 C1 N6 111.895 H3 C1 H4 108.849
H3 C1 N6 108.348 H4 C1 N6 111.348
H5 N6 C7 114.082 N6 C7 N10 113.560
N6 C7 O11 123.213 C7 N10 H8 121.266
C7 N10 H9 114.960 H8 N10 H9 117.163
N10 C7 O11 123.221
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability