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

using model chemistry: CCSD/TZVP

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 CCSD/TZVP
 hartrees
Energy at 0K-244.635122
Energy at 298.15K 
HF Energy-243.916240
Nuclear repulsion energy123.801375
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 CCSD/TZVP
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' 3868 3692 84.54      
2 A' 3819 3645 72.80      
3 A' 3681 3513 66.53      
4 A' 1871 1786 597.58      
5 A' 1653 1577 122.62      
6 A' 1465 1398 145.40      
7 A' 1271 1213 224.99      
8 A' 1104 1054 39.08      
9 A' 978 933 41.07      
10 A' 603 575 35.42      
11 A' 503 480 5.71      
12 A" 771 736 23.55      
13 A" 571 545 58.55      
14 A" 436 416 89.29      
15 A" 414i 395i 251.86      

Unscaled Zero Point Vibrational Energy (zpe) 11090.1 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 10584.4 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 CCSD/TZVP
ABC
0.38807 0.36385 0.18779

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.131 0.000
O2 -0.065 1.336 0.000
N3 1.138 -0.604 0.000
O4 -1.090 -0.680 0.000
H5 2.015 -0.121 0.000
H6 1.106 -1.605 0.000
H7 -1.851 -0.089 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20721.35431.35812.03112.05861.8642
O21.20722.28252.26162.53983.16602.2853
N31.35432.28252.22871.00171.00193.0330
O41.35812.26162.22873.15492.38300.9640
H52.03112.53981.00173.15491.74053.8668
H62.05863.16601.00192.38301.74053.3237
H71.86422.28533.03300.96403.86683.3237

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 118.337 C1 N3 H6 121.052
C1 O4 H7 105.546 O2 C1 N3 125.922
O2 C1 O4 123.574 N3 C1 O4 110.504
H5 N3 H6 120.610
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCSD/TZVP
 hartrees
Energy at 0K-244.635811
Energy at 298.15K-244.640769
HF Energy-243.915771
Nuclear repulsion energy123.708928
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 CCSD/TZVP
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 3867 3691 84.61      
2 A 3771 3599 50.65      
3 A 3648 3481 46.20      
4 A 1876 1791 549.32      
5 A 1660 1584 103.87      
6 A 1462 1395 140.88      
7 A 1281 1223 166.38      
8 A 1126 1075 90.67      
9 A 978 934 38.55      
10 A 781 746 55.28      
11 A 607 580 53.79      
12 A 559 534 84.59      
13 A 512 489 110.96      
14 A 503 480 104.92      
15 A 439 419 106.52      

Unscaled Zero Point Vibrational Energy (zpe) 11535.6 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 11009.6 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 CCSD/TZVP
ABC
0.38799 0.36214 0.18785

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.040 0.125 -0.002
O2 -0.457 1.256 0.008
N3 1.274 -0.242 -0.068
O4 -0.839 -0.971 0.004
H5 1.928 0.480 0.179
H6 1.506 -1.180 0.209
H7 -1.743 -0.637 -0.001

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20551.36531.35682.00782.03321.8661
O21.20552.29022.25962.51463.13452.2883
N31.36532.29022.23651.00471.00513.0435
O41.35682.25962.23653.12962.36270.9640
H52.00782.51461.00473.12961.71263.8418
H62.03323.13451.00512.36271.71263.3004
H71.86612.28833.04350.96403.84183.3004

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 114.967 C1 N3 H6 117.329
C1 O4 H7 105.800 O2 C1 N3 125.840
O2 C1 O4 123.629 N3 C1 O4 110.491
H5 N3 H6 116.893
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability