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All results from a given calculation for NH2CN (cyanamide)

using model chemistry: QCISD/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 QCISD/cc-pVTZ
 hartrees
Energy at 0K-148.525718
Energy at 298.15K-148.528037
Nuclear repulsion energy59.215530
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/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' 3588 3428 38.12      
2 A' 2351 2247 73.61      
3 A' 1661 1587 36.32      
4 A' 1077 1029 7.06      
5 A' 677 647 201.25      
6 A' 486 464 23.20      
7 A" 3682 3518 53.11      
8 A" 1232 1177 0.14      
9 A" 404 386 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 7578.7 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 7241.5 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/cc-pVTZ
ABC
10.09087 0.33695 0.32951

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.222 0.000
N2 -0.039 1.380 0.000
N3 0.114 -1.127 0.000
H4 -0.262 -1.552 0.833
H5 -0.262 -1.552 -0.833

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.15901.35411.97701.9770
N21.15902.51243.05623.0562
N31.35412.51241.00771.0077
H41.97703.05621.00771.6666
H51.97703.05621.00771.6666

picture of cyanamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 112.843 C1 N3 H5 112.843
N2 C1 N3 177.112 H4 N3 H5 111.579
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at QCISD/cc-pVTZ
 hartrees
Energy at 0K-148.523382
Energy at 298.15K 
HF Energy-147.965349
Nuclear repulsion energy59.449142
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/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 3682 3518 74.43      
2 A1 2350 2245 113.21      
3 A1 1643 1570 45.48      
4 A1 1122 1072 15.71      
5 B1 521 498 0.31      
6 B1 496i 474i 256.35      
7 B2 3807 3638 95.89      
8 B2 1151 1100 1.41      
9 B2 399 381 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 7090.1 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 6774.6 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 QCISD/cc-pVTZ
ABC
11.21198 0.33957 0.32959

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.222
N2 0.000 0.000 1.382
N3 0.000 0.000 -1.111
H4 0.000 0.864 -1.613
H5 0.000 -0.864 -1.613

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5
C11.16081.33292.02812.0281
N21.16082.49373.11783.1178
N31.33292.49370.99900.9990
H42.02813.11780.99901.7273
H52.02813.11780.99901.7273

picture of cyanamide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H4 120.173 C1 N3 H5 120.173
N2 C1 N3 180.000 H4 N3 H5 119.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability