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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: CCSD(T)=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at CCSD(T)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-207.755325
Energy at 298.15K 
HF Energy-206.866770
Nuclear repulsion energy104.075179
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 CCSD(T)=FULL/6-311+G(3df,2p)
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' 3158 3158        
2 A' 3063 3063        
3 A' 2357 2357        
4 A' 1522 1522        
5 A' 1488 1488        
6 A' 1469 1469        
7 A' 1165 1165        
8 A' 891 891        
9 A' 649 649        
10 A' 170 170        
11 A" 3134 3134        
12 A" 1526 1526        
13 A" 1142 1142        
14 A" 602 602        
15 A" 52 52        

Unscaled Zero Point Vibrational Energy (zpe) 11194.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11194.1 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 CCSD(T)=FULL/6-311+G(3df,2p)
ABC
2.55725 0.14616 0.14196

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.361 1.073 0.000
N2 0.000 0.595 0.000
C3 -0.566 -0.466 0.000
O4 -1.237 -1.429 0.000
H5 1.348 2.160 0.000
H6 1.891 0.730 0.888
H7 1.891 0.730 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44232.46663.60711.08671.08961.0896
N21.44231.20312.37252.06532.09332.0933
C32.46661.20311.17353.24982.87372.8737
O43.60712.37251.17354.42313.90323.9032
H51.08672.06533.24984.42311.76841.7684
H61.08962.09332.87373.90321.76841.7761
H71.08962.09332.87373.90321.76841.7761

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.445 N2 C1 H5 108.682
N2 C1 H6 110.767 N2 C1 H7 110.767
N2 C3 O4 173.242 H5 C1 H6 108.699
H5 C1 H7 108.699 H6 C1 H7 109.175
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability