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All results from a given calculation for HCOOC2H5 (Ethyl formate)

using model chemistry: CCSD=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
Energy calculated at CCSD=FULL/cc-pVDZ
 hartrees
Energy at 0K-267.680547
Energy at 298.15K-267.687810
HF Energy-266.847085
Nuclear repulsion energy177.318139
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=FULL/cc-pVDZ
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' 3167 3167 21.25      
2 A' 3101 3101 58.95      
3 A' 3093 3093 23.99      
4 A' 3078 3078 17.48      
5 A' 1857 1857 284.18      
6 A' 1526 1526 6.06      
7 A' 1502 1502 1.96      
8 A' 1445 1445 18.36      
9 A' 1419 1419 2.14      
10 A' 1398 1398 2.09      
11 A' 1252 1252 425.67      
12 A' 1150 1150 8.50      
13 A' 1070 1070 15.01      
14 A' 884 884 11.70      
15 A' 802 802 3.86      
16 A' 387 387 6.27      
17 A' 237 237 6.13      
18 A" 3174 3174 33.69      
19 A" 3141 3141 11.81      
20 A" 1487 1487 4.98      
21 A" 1307 1307 1.52      
22 A" 1193 1193 4.55      
23 A" 1063 1063 0.36      
24 A" 816 816 0.20      
25 A" 345 345 20.05      
26 A" 246 246 2.70      
27 A" 76 76 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 20107.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20107.5 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 CCSD=FULL/cc-pVDZ
ABC
0.58891 0.09687 0.08591

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.178 -0.260 0.000
C2 -0.690 -0.561 0.000
O3 0.000 0.709 0.000
C4 1.341 0.617 0.000
O5 1.978 -0.406 0.000
H6 -2.752 -1.202 0.000
H7 -2.457 0.321 0.895
H8 -2.457 0.321 -0.895
H9 -0.385 -1.137 -0.890
H10 -0.385 -1.137 0.890
H11 1.773 1.637 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51852.38373.62614.15871.10321.10261.10262.18542.18544.3828
C21.51851.44452.34672.67222.15952.16812.16811.10331.10333.3006
O32.38371.44451.34372.27053.35012.64322.64322.08492.08492.0013
C43.62612.34671.34371.20514.47813.91243.91242.61632.61631.1085
O54.15872.67222.27051.20514.79624.58234.58232.62912.62912.0535
H61.10322.15953.35014.47814.79621.79121.79122.52922.52925.3417
H71.10262.16812.64323.91244.58231.79121.78943.09892.53314.5191
H81.10262.16812.64323.91244.58231.79121.78942.53313.09894.5191
H92.18541.10332.08492.61632.62912.52923.09892.53311.78073.6257
H102.18541.10332.08492.61632.62912.52922.53313.09891.78073.6257
H114.38283.30062.00131.10852.05355.34174.51914.51913.62573.6257

picture of Ethyl formate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.096 C1 C2 H9 111.949
C1 C2 H10 111.949 C2 C1 H6 109.904
C2 C1 H7 110.615 C2 C1 H8 110.615
C2 O3 C4 114.586 O3 C2 H9 109.097
O3 C2 H10 109.097 O3 C4 O5 125.873
O3 C4 H11 109.027 O5 C4 H11 125.100
H6 C1 H7 108.591 H6 C1 H8 108.591
H7 C1 H8 108.466 H9 C2 H10 107.601
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability