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

using model chemistry: MP4=FULL/6-311G**

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at MP4=FULL/6-311G**
 hartrees
Energy at 0K-244.720360
Energy at 298.15K 
HF Energy-243.893541
Nuclear repulsion energy123.187626
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/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' 3858 3710        
2 A' 3810 3663        
3 A' 3671 3530        
4 A' 1852 1781        
5 A' 1629 1566        
6 A' 1442 1387        
7 A' 1248 1200        
8 A' 1078 1036        
9 A' 953 916        
10 A' 583 561        
11 A' 487 468        
12 A" 770 740        
13 A" 581 559        
14 A" 449 432        
15 A" 409i 393i        

Unscaled Zero Point Vibrational Energy (zpe) 11001.3 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 10577.7 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/6-311G**
ABC
0.38206 0.36182 0.18583

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.135 0.000
O2 -0.054 1.348 0.000
N3 1.135 -0.618 0.000
O4 -1.098 -0.679 0.000
H5 2.021 -0.145 0.000
H6 1.092 -1.621 0.000
H7 -1.845 -0.069 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21451.36231.36632.03992.06781.8558
O21.21452.29802.27962.55603.18282.2835
N31.36232.29802.23401.00381.00423.0300
O41.36632.27962.23403.16382.38390.9638
H52.03992.55601.00383.16381.74433.8659
H62.06783.18281.00422.38391.74433.3213
H71.85582.28353.03000.96383.86593.3213

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 118.323 C1 N3 H6 121.064
C1 O4 H7 104.250 O2 C1 N3 126.103
O2 C1 O4 123.981 N3 C1 O4 109.916
H5 N3 H6 120.613
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP4=FULL/6-311G**
 hartrees
Energy at 0K-244.721199
Energy at 298.15K-244.726132
HF Energy-243.893082
Nuclear repulsion energy123.085598
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/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 3856 3708        
2 A 3751 3607        
3 A 3628 3488        
4 A 1851 1780        
5 A 1638 1575        
6 A 1440 1384        
7 A 1259 1210        
8 A 1105 1063        
9 A 954 917        
10 A 776 746        
11 A 589 566        
12 A 563 541        
13 A 514 494        
14 A 499 480        
15 A 437 421        

Unscaled Zero Point Vibrational Energy (zpe) 11429.6 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 10989.6 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 MP4=FULL/6-311G**
ABC
0.38199 0.35990 0.18594

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.044 0.127 -0.002
O2 -0.488 1.256 0.009
N3 1.284 -0.220 -0.074
O4 -0.818 -0.997 0.003
H5 1.918 0.516 0.194
H6 1.524 -1.150 0.233
H7 -1.723 -0.666 0.006

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21311.37511.36442.01042.03591.8569
O21.21312.30762.27712.52393.14412.2851
N31.37512.30762.24281.00761.00813.0418
O41.36442.27712.24283.13262.35830.9640
H52.01042.52391.00763.13261.71243.8334
H62.03593.14411.00812.35831.71243.2912
H71.85692.28513.04180.96403.83343.2912

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 114.187 C1 N3 H6 116.522
C1 O4 H7 104.471 O2 C1 N3 126.034
O2 C1 O4 124.013 N3 C1 O4 109.907
H5 N3 H6 116.325
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability