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All results from a given calculation for NH2CONH2 (Urea)

using model chemistry: MP2=FULL/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 3 yes C2V 1A1

Conformer 1 (C2)

Jump to S1C2 S1C3
Vibrational Frequencies calculated at MP2=FULL/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/aug-cc-pVQZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVQZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at MP2=FULL/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/aug-cc-pVQZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVQZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C2V)

Jump to S1C1 S1C2
Energy calculated at MP2=FULL/aug-cc-pVQZ
 hartrees
Energy at 0K-225.093463
Energy at 298.15K 
HF Energy-224.098397
Nuclear repulsion energy124.492465
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=FULL/aug-cc-pVQZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3815 3648 82.13      
2 A1 3671 3511 9.18      
3 A1 1797 1718 507.14      
4 A1 1633 1562 0.24      
5 A1 1149 1099 0.58      
6 A1 983 940 14.37      
7 A1 481 460 2.52      
8 A2 378 362 0.00      
9 A2 333i 318i 0.00      
10 B1 782 748 3.07      
11 B1 579 554 10.51      
12 B1 195i 186i 426.93      
13 B2 3812 3646 43.92      
14 B2 3665 3505 96.11      
15 B2 1632 1561 281.40      
16 B2 1437 1374 213.79      
17 B2 995 951 14.59      
18 B2 567 542 12.99      

Unscaled Zero Point Vibrational Energy (zpe) 13422.9 cm-1
Scaled (by 0.9564) Zero Point Vibrational Energy (zpe) 12837.6 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=FULL/aug-cc-pVQZ
ABC
0.37836 0.35163 0.18225

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.140
O2 0.000 0.000 1.357
N3 0.000 1.150 -0.595
N4 0.000 -1.150 -0.595
H5 0.000 2.012 -0.090
H6 0.000 1.167 -1.593
H7 0.000 -2.012 -0.090
H8 0.000 -1.167 -1.593

Atom - Atom Distances (Å)
  C1 O2 N3 N4 H5 H6 H7 H8
C11.21681.36491.36492.02522.08982.02522.0898
O21.21682.26562.26562.47833.17282.47833.1728
N31.36492.26562.29990.99930.99833.20222.5231
N41.36492.26562.29993.20222.52310.99930.9983
H52.02522.47830.99933.20221.72464.02433.5169
H62.08983.17280.99832.52311.72463.51692.3345
H72.02522.47833.20220.99934.02433.51691.7246
H82.08983.17282.52310.99833.51692.33451.7246

picture of Urea state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 117.036 C1 N3 H6 123.590
C1 N4 H7 117.036 C1 N4 H8 123.590
O2 C1 N3 122.594 O2 C1 N4 122.594
N3 C1 N4 114.811 H5 N3 H6 119.375
H7 N4 H8 119.375
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability