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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: QCISD/6-31G(2df,p)

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 QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-148.462080
Energy at 298.15K-148.464412
Nuclear repulsion energy59.127928
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 QCISD/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3608 3418 41.14      
2 A' 2363 2239 65.47      
3 A' 1665 1577 38.26      
4 A' 1081 1024 5.57      
5 A' 685 649 213.38      
6 A' 495 469 25.60      
7 A" 3705 3510 55.08      
8 A" 1227 1163 0.00      
9 A" 413 391 1.05      

Unscaled Zero Point Vibrational Energy (zpe) 7620.8 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 7219.9 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 QCISD/6-31G(2df,p)
ABC
10.06034 0.33608 0.32869

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.221 0.000
N2 -0.047 1.382 0.000
N3 0.120 -1.128 0.000
H4 -0.255 -1.556 0.834
H5 -0.255 -1.556 -0.834

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16231.35401.97911.9791
N21.16232.51553.06113.0611
N31.35402.51551.00971.0097
H41.97913.06111.00971.6676
H51.97913.06111.00971.6676

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 112.902 C1 N3 H5 112.902
N2 C1 N3 177.237 H4 N3 H5 111.333
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-148.459671
Energy at 298.15K 
HF Energy-147.924660
Nuclear repulsion energy59.373468
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 QCISD/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3707 3512 81.26      
2 A1 2364 2240 101.86      
3 A1 1642 1556 47.82      
4 A1 1128 1068 13.11      
5 B1 534 506 1.09      
6 B1 501i 475i 274.01      
7 B2 3832 3631 99.24      
8 B2 1148 1087 2.53      
9 B2 407 386 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 7130.2 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 6755.1 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 QCISD/6-31G(2df,p)
ABC
11.21133 0.33879 0.32885

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.221
N2 0.000 0.000 1.385
N3 0.000 0.000 -1.112
H4 0.000 0.864 -1.617
H5 0.000 -0.864 -1.617

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16411.33222.03032.0303
N21.16412.49633.12333.1233
N31.33222.49631.00061.0006
H42.03033.12331.00061.7274
H52.03033.12331.00061.7274

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.328 C1 N3 H5 120.328
N2 C1 N3 180.000 H4 N3 H5 119.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability