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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: MP2/CEP-31G*

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/CEP-31G*
 hartrees
Energy at 0K-26.409691
Energy at 298.15K-26.411977
Nuclear repulsion energy30.945553
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/CEP-31G*
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' 3558 3378 37.81      
2 A' 2232 2119 67.25      
3 A' 1673 1588 51.26      
4 A' 1042 989 5.64      
5 A' 749 711 258.08      
6 A' 453 430 20.69      
7 A" 3669 3484 49.95      
8 A" 1227 1165 0.64      
9 A" 391 371 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 7496.6 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 7117.3 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/CEP-31G*
ABC
9.65924 0.32131 0.31461

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.217 0.000
N2 -0.008 1.418 0.000
N3 0.098 -1.157 0.000
H4 -0.315 -1.563 0.843
H5 -0.315 -1.563 -0.843

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.20091.37711.99391.9939
N21.20092.57673.11233.1123
N31.37712.57671.02241.0224
H41.99393.11231.02241.6855
H51.99393.11231.02241.6855

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 111.534 C1 N3 H5 111.534
N2 C1 N3 176.293 H4 N3 H5 111.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-26.406131
Energy at 298.15K 
HF Energy-25.977703
Nuclear repulsion energy31.037138
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/CEP-31G*
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 3659 3474 90.21      
2 A1 2272 2157 120.40      
3 A1 1630 1548 58.03      
4 A1 1090 1035 15.57      
5 B1 483 459 1.68      
6 B1 570i 541i 366.10      
7 B2 3796 3604 108.07      
8 B2 1117 1061 3.99      
9 B2 390 370 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 6933.8 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 6583.0 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/CEP-31G*
ABC
10.85628 0.32383 0.31445

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.218
N2 0.000 0.000 1.419
N3 0.000 0.000 -1.136
H4 0.000 0.878 -1.644
H5 0.000 -0.878 -1.644

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.20161.35412.05852.0585
N21.20162.55573.18693.1869
N31.35412.55571.01411.0141
H42.05853.18691.01411.7554
H52.05853.18691.01411.7554

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.059 C1 N3 H5 120.059
N2 C1 N3 180.000 H4 N3 H5 119.882
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability