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 NH2CN (cyanamide)

using model chemistry: MP2=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
1 2 no C2V 1A1

Conformer 1 (Cs)

Jump to S1C2
Energy calculated at MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-148.560584
Energy at 298.15K-148.562880
Nuclear repulsion energy59.188393
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 MP2=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' 3601 3418 48.66      
2 A' 2281 2165 64.87      
3 A' 1648 1565 39.04      
4 A' 1083 1029 9.17      
5 A' 642 610 204.99      
6 A' 480 456 25.75      
7 A" 3700 3513 68.33      
8 A" 1211 1150 0.00      
9 A" 405 384 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 7525.4 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 7144.7 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 MP2=FULL/cc-pVTZ
ABC
10.19708 0.33696 0.32938

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.216 0.000
N2 -0.024 1.384 0.000
N3 0.100 -1.125 0.000
H4 -0.265 -1.554 0.834
H5 -0.265 -1.554 -0.834

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16821.34481.97461.9746
N21.16822.51203.06363.0636
N31.34482.51201.00631.0063
H41.97463.06361.00631.6682
H51.97463.06361.00631.6682

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 113.471 C1 N3 H5 113.471
N2 C1 N3 176.933 H4 N3 H5 111.957
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-148.558631
Energy at 298.15K 
HF Energy-147.964247
Nuclear repulsion energy59.393041
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 MP2=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 A1 3685 3498 86.75      
2 A1 2307 2191 102.62      
3 A1 1641 1558 47.88      
4 A1 1120 1063 15.66      
5 B1 511 485        
6 B1 473i 449i 252.23      
7 B2 3810 3617 110.58      
8 B2 1139 1082 2.30      
9 B2 403 383 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 7071.9 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 6714.0 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 MP2=FULL/cc-pVTZ
ABC
11.24735 0.33913 0.32920

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.217
N2 0.000 0.000 1.386
N3 0.000 0.000 -1.110
H4 0.000 0.862 -1.614
H5 0.000 -0.862 -1.614

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16881.32692.02352.0235
N21.16882.49573.12083.1208
N31.32692.49570.99860.9986
H42.02353.12080.99861.7246
H52.02353.12080.99861.7246

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.288 C1 N3 H5 120.288
N2 C1 N3 180.000 H4 N3 H5 119.425
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability