return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CCSD(T)=FULL/cc-pVTZ

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(T)=FULL/cc-pVTZ
 hartrees
Energy at 0K-244.857546
Energy at 298.15K 
HF Energy-243.924787
Nuclear repulsion energy123.984837
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(T)=FULL/cc-pVTZ
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' 3842 3681        
2 A' 3807 3647        
3 A' 3674 3519        
4 A' 1865 1787        
5 A' 1640 1571        
6 A' 1461 1399        
7 A' 1247 1195        
8 A' 1086 1040        
9 A' 970 930        
10 A' 591 566        
11 A' 489 468        
12 A" 800 767        
13 A" 594 569        
14 A" 483 463        
15 A" 238i 228i        

Unscaled Zero Point Vibrational Energy (zpe) 11155.7 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 10687.2 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(T)=FULL/cc-pVTZ
ABC
0.38866 0.36545 0.18835

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.130 0.000
O2 -0.064 1.336 0.000
N3 1.135 -0.604 0.000
O4 -1.088 -0.680 0.000
H5 2.011 -0.123 0.000
H6 1.102 -1.602 0.000
H7 -1.841 -0.080 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20741.35151.35602.02642.05291.8526
O21.20742.28032.26042.53643.16092.2713
N31.35152.28032.22390.99890.99913.0215
O41.35602.26042.22393.14792.37570.9629
H52.02642.53640.99893.14791.73623.8515
H62.05293.16090.99912.37571.73623.3130
H71.85262.27133.02150.96293.85153.3130

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 118.352 C1 N3 H6 120.971
C1 O4 H7 104.780 O2 C1 N3 125.939
O2 C1 O4 123.613 N3 C1 O4 110.449
H5 N3 H6 120.677
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCSD(T)=FULL/cc-pVTZ
 hartrees
Energy at 0K-244.857704
Energy at 298.15K-244.862525
HF Energy-243.924692
Nuclear repulsion energy123.927531
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(T)=FULL/cc-pVTZ
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 3841 3680        
2 A 3777 3618        
3 A 3652 3498        
4 A 1866 1788        
5 A 1645 1576        
6 A 1459 1398        
7 A 1253 1200        
8 A 1100 1054        
9 A 972 931        
10 A 799 766        
11 A 595 570        
12 A 579 555        
13 A 500 479        
14 A 468 448        
15 A 331 317        

Unscaled Zero Point Vibrational Energy (zpe) 11418.3 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 10938.7 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 CCSD(T)=FULL/cc-pVTZ
ABC
0.38875 0.36427 0.18840

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.040 0.124 -0.002
O2 -0.470 1.251 0.007
N3 1.271 -0.229 -0.053
O4 -0.828 -0.979 0.002
H5 1.931 0.498 0.140
H6 1.523 -1.172 0.168
H7 -1.729 -0.639 0.009

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20661.35811.35522.01122.03721.8531
O21.20662.28522.25872.51953.14132.2713
N31.35812.28522.22911.00081.00123.0279
O41.35522.25872.22913.13222.36410.9630
H52.01122.51951.00083.13221.71963.8345
H62.03723.14131.00122.36411.71963.2986
H71.85312.27133.02790.96303.83453.2986

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 116.166 C1 N3 H6 118.632
C1 O4 H7 104.875 O2 C1 N3 125.901
O2 C1 O4 123.598 N3 C1 O4 110.480
H5 N3 H6 118.385
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability