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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: MP2/CEP-121G*

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-121G*
 hartrees
Energy at 0K-26.445546
Energy at 298.15K-26.447837
Nuclear repulsion energy31.149584
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-121G*
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' 3546 3379 33.18      
2 A' 2193 2090 48.90      
3 A' 1691 1611 54.78      
4 A' 1038 989 5.09      
5 A' 767 731 255.56      
6 A' 449 428 16.71      
7 A" 3654 3481 45.21      
8 A" 1242 1183 0.24      
9 A" 383 365 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 7481.2 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 7128.1 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/CEP-121G*
ABC
9.75497 0.32564 0.31883

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.219 0.000
N2 0.004 1.407 0.000
N3 0.089 -1.151 0.000
H4 -0.325 -1.552 0.838
H5 -0.325 -1.552 -0.838

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.18811.37221.98601.9860
N21.18812.55883.09283.0928
N31.37222.55881.01761.0176
H41.98603.09281.01761.6769
H51.98603.09281.01761.6769

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 111.549 C1 N3 H5 111.549
N2 C1 N3 176.102 H4 N3 H5 110.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2/CEP-121G*
 hartrees
Energy at 0K-26.441785
Energy at 298.15K 
HF Energy-25.989563
Nuclear repulsion energy31.250433
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-121G*
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 3647 3474 81.99      
2 A1 2230 2125 98.23      
3 A1 1649 1572 59.37      
4 A1 1084 1033 15.31      
5 B1 480 457 1.33      
6 B1 590i 562i 345.30      
7 B2 3784 3605 96.86      
8 B2 1133 1079 3.83      
9 B2 388 370 0.39      

Unscaled Zero Point Vibrational Energy (zpe) 6902.1 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 6576.3 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-121G*
ABC
10.98937 0.32833 0.31881

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.219
N2 0.000 0.000 1.408
N3 0.000 0.000 -1.129
H4 0.000 0.872 -1.635
H5 0.000 -0.872 -1.635

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.18901.34842.04952.0495
N21.18902.53753.16613.1661
N31.34842.53751.00861.0086
H42.04953.16611.00861.7448
H52.04953.16611.00861.7448

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.121 C1 N3 H5 120.121
N2 C1 N3 180.000 H4 N3 H5 119.758
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability