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

using model chemistry: CCD/6-31G(2df,p)

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 CCD/6-31G(2df,p)
 hartrees
Energy at 0K-244.642721
Energy at 298.15K 
HF Energy-243.852536
Nuclear repulsion energy124.226888
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 CCD/6-31G(2df,p)
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' 3903 3697 88.09      
2 A' 3860 3656 77.60      
3 A' 3719 3523 72.82      
4 A' 1923 1821 511.94      
5 A' 1649 1561 151.46      
6 A' 1489 1410 116.59      
7 A' 1277 1210 207.17      
8 A' 1107 1049 31.95      
9 A' 997 944 28.70      
10 A' 603 571 39.42      
11 A' 498 472 5.79      
12 A" 821 778 31.86      
13 A" 609 577 61.19      
14 A" 501 475 59.72      
15 A" 257i 243i 233.71      

Unscaled Zero Point Vibrational Energy (zpe) 11350.0 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 10750.7 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 CCD/6-31G(2df,p)
ABC
0.39084 0.36635 0.18910

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.132 0.000
O2 -0.045 1.333 0.000
N3 1.124 -0.621 0.000
O4 -1.094 -0.661 0.000
H5 2.009 -0.153 0.000
H6 1.076 -1.619 0.000
H7 -1.841 -0.056 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20251.35281.35102.02862.05561.8502
O21.20252.27722.25322.53533.15872.2703
N31.35282.27722.21891.00011.00013.0183
O41.35102.25322.21893.14392.37290.9607
H52.02862.53531.00013.14391.73743.8504
H62.05563.15871.00012.37291.73743.3097
H71.85022.27033.01830.96073.85043.3097

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 118.356 C1 N3 H6 121.041
C1 O4 H7 105.072 O2 C1 N3 125.939
O2 C1 O4 123.762 N3 C1 O4 110.299
H5 N3 H6 120.604
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-244.642933
Energy at 298.15K-244.647817
HF Energy-243.852474
Nuclear repulsion energy124.149840
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 CCD/6-31G(2df,p)
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 3901 3695 88.12      
2 A 3823 3621 63.23      
3 A 3693 3498 56.76      
4 A 1926 1824 484.65      
5 A 1656 1569 127.87      
6 A 1487 1408 122.61      
7 A 1282 1215 178.19      
8 A 1123 1063 59.75      
9 A 998 945 26.78      
10 A 820 777 43.92      
11 A 607 575 57.83      
12 A 592 560 70.39      
13 A 513 486 20.81      
14 A 477 452 18.25      
15 A 354 336 264.13      

Unscaled Zero Point Vibrational Energy (zpe) 11626.2 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 11012.4 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 CCD/6-31G(2df,p)
ABC
0.39070 0.36507 0.18912

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.044 0.124 -0.003
O2 -0.475 1.246 0.007
N3 1.271 -0.224 -0.057
O4 -0.820 -0.980 0.003
H5 1.926 0.507 0.149
H6 1.526 -1.163 0.182
H7 -1.724 -0.653 0.007

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20141.36091.35002.01232.03871.8511
O21.20142.28282.25202.51633.13652.2722
N31.36092.28282.22461.00261.00273.0260
O41.35002.25202.22463.12642.36040.9608
H52.01232.51631.00263.12641.71763.8322
H62.03873.13651.00272.36041.71763.2944
H71.85112.27223.02600.96083.83223.2944

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 115.897 C1 N3 H6 118.417
C1 O4 H7 105.222 O2 C1 N3 125.860
O2 C1 O4 123.827 N3 C1 O4 110.290
H5 N3 H6 117.861
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability