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All results from a given calculation for NH2COOH (Carbamic acid)

using model chemistry: MP4=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no C1 1A

Conformer 1 (CS)

Jump to S1C2
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-242.924504
Energy at 298.15K-242.929295
HF Energy-242.452892
Nuclear repulsion energy120.594999
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 MP4=FULL/3-21G
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' 3703 3625        
2 A' 3569 3493        
3 A' 3524 3449        
4 A' 1765 1728        
5 A' 1681 1645        
6 A' 1431 1401        
7 A' 1210 1184        
8 A' 1062 1040        
9 A' 875 856        
10 A' 559 547        
11 A' 474 464        
12 A" 735 720        
13 A" 589 576        
14 A" 470 460        
15 A" 403 395        

Unscaled Zero Point Vibrational Energy (zpe) 11024.4 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 10790.7 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 MP4=FULL/3-21G
ABC
0.36142 0.35100 0.17807

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.148 0.000
O2 -0.225 1.372 0.000
N3 1.215 -0.487 0.000
O4 -1.018 -0.836 0.000
H5 2.062 0.064 0.000
H6 1.260 -1.497 0.000
H7 -1.880 -0.340 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.24431.37071.41622.06352.07241.9420
O21.24432.35112.34632.63403.23062.3812
N31.37072.35112.26011.01081.01133.0978
O41.41622.34632.26013.20912.37220.9939
H52.06352.63401.01083.20911.75563.9621
H62.07243.23061.01132.37221.75563.3460
H71.94202.38123.09780.99393.96213.3460

picture of Carbamic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.335 C1 N3 H6 120.169
C1 O4 H7 106.042 O2 C1 N3 128.012
O2 C1 O4 123.619 N3 C1 O4 108.368
H5 N3 H6 120.496
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-242.924504
Energy at 298.15K-242.929294
HF Energy-242.452923
Nuclear repulsion energy120.597674
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 MP4=FULL/3-21G
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 3703 3624        
2 A 3568 3492        
3 A 3525 3450        
4 A 1765 1727        
5 A 1681 1645        
6 A 1431 1401        
7 A 1210 1185        
8 A 1062 1039        
9 A 876 857        
10 A 735 720        
11 A 589 576        
12 A 559 547        
13 A 475 465        
14 A 469 459        
15 A 402 393        

Unscaled Zero Point Vibrational Energy (zpe) 11024.2 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 10790.5 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 MP4=FULL/3-21G
ABC
0.36138 0.35107 0.17808

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.034 0.144 -0.000
O2 0.534 1.284 0.000
N3 -1.294 -0.194 -0.001
O4 0.799 -1.047 -0.000
H5 -1.991 0.538 0.001
H6 -1.571 -1.167 0.004
H7 1.751 -0.763 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.24431.37091.41592.06322.07261.9419
O21.24432.35072.34612.63253.23042.3813
N31.37092.35072.26061.01081.01133.0982
O41.41592.34612.26063.20922.37340.9938
H52.06322.63251.01083.20921.75593.9620
H62.07263.23041.01132.37341.75593.3470
H71.94192.38133.09820.99383.96203.3470

picture of Carbamic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.285 C1 N3 H6 120.176
C1 O4 H7 106.059 O2 C1 N3 127.956
O2 C1 O4 123.628 N3 C1 O4 108.416
H5 N3 H6 120.537
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability