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/STO-3G

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/STO-3G
 hartrees
Energy at 0K-146.206330
Energy at 298.15K-146.208487
Nuclear repulsion energy56.040139
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/STO-3G
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' 3615 3214 4.20      
2 A' 2182 1939 4.83      
3 A' 1848 1643 12.22      
4 A' 1101 978 54.77      
5 A' 896 797 49.50      
6 A' 385 342 13.09      
7 A" 3800 3378 0.07      
8 A" 1382 1229 2.88      
9 A" 379 337 1.38      

Unscaled Zero Point Vibrational Energy (zpe) 7794.1 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 6928.1 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/STO-3G
ABC
8.56811 0.30099 0.29658

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.229 0.000
N2 0.038 1.456 0.000
N3 0.096 -1.213 0.000
H4 -0.469 -1.537 0.834
H5 -0.469 -1.537 -0.834

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22751.44462.00872.0087
N21.22752.66893.14833.1483
N31.44462.66891.05821.0582
H42.00873.14831.05821.6670
H52.00873.14831.05821.6670

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 105.719 C1 N3 H5 105.719
N2 C1 N3 174.410 H4 N3 H5 103.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2=FULL/STO-3G
 hartrees
Energy at 0K-146.193295
Energy at 298.15K 
HF Energy-145.981898
Nuclear repulsion energy56.992043
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/STO-3G
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 3861 3432 57.82      
2 A1 2407 2140 12.23      
3 A1 1753 1559 21.51      
4 A1 1067 948 17.18      
5 B1 420 373 0.07      
6 B1 777i 690i 345.77      
7 B2 4068 3616 25.19      
8 B2 1195 1062 2.80      
9 B2 401 356 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 7197.2 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 6397.6 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 MP2=FULL/STO-3G
ABC
10.62430 0.31121 0.30235

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.225
N2 0.000 0.000 1.447
N3 0.000 0.000 -1.159
H4 0.000 0.887 -1.681
H5 0.000 -0.887 -1.681

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.22151.38452.10272.1027
N21.22152.60603.25123.2512
N31.38452.60601.02931.0293
H42.10273.25121.02931.7745
H52.10273.25121.02931.7745

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.461 C1 N3 H5 120.461
N2 C1 N3 180.000 H4 N3 H5 119.079
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability