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All results from a given calculation for CH3CH(NH2)COOH (Alanine)

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-322.898503
Energy at 298.15K-322.908095
Nuclear repulsion energy249.201340
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-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 3631 3484 228.22      
2 A 3589 3443 5.51      
3 A 3498 3356 1.70      
4 A 3176 3047 8.44      
5 A 3140 3012 27.24      
6 A 3066 2942 13.05      
7 A 3061 2937 17.95      
8 A 1889 1813 253.22      
9 A 1664 1596 28.34      
10 A 1498 1438 36.70      
11 A 1489 1428 2.72      
12 A 1470 1410 359.74      
13 A 1421 1363 6.67      
14 A 1408 1351 9.40      
15 A 1350 1296 19.99      
16 A 1263 1211 9.59      
17 A 1234 1184 11.37      
18 A 1176 1128 7.05      
19 A 1127 1081 53.10      
20 A 1027 985 0.69      
21 A 964 925 71.16      
22 A 924 887 36.84      
23 A 839 805 50.49      
24 A 812 779 43.17      
25 A 741 711 10.51      
26 A 563 540 8.09      
27 A 538 516 0.69      
28 A 414 397 6.34      
29 A 369 354 18.87      
30 A 306 293 13.02      
31 A 284 273 13.31      
32 A 237 228 1.01      
33 A 80 77 1.29      

Unscaled Zero Point Vibrational Energy (zpe) 24123.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 23144.2 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-pVDZ
ABC
0.16133 0.11490 0.07134

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.032 1.385 -0.081
C2 1.505 -1.116 -0.153
C3 0.645 0.035 0.376
C4 -0.849 -0.186 0.050
O5 -1.546 0.956 -0.092
O6 -1.353 -1.282 -0.032
H7 1.308 1.335 -1.067
H8 1.869 1.692 0.420
H9 1.126 -2.081 0.221
H10 1.472 -1.145 -1.258
H11 0.694 0.049 1.483
H12 2.556 -0.991 0.165
H13 -0.868 1.661 -0.039

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.54611.47692.45422.61403.57781.02571.02243.48002.82522.08432.83301.9205
C22.54611.53072.53873.68862.86512.62302.88861.10191.10632.16511.10483.6542
C31.47691.53071.54442.42222.42672.05222.06112.17502.17851.10822.17922.2591
C42.45422.53871.54441.34561.20862.86553.32442.74192.83132.11873.50021.8491
O52.61403.68862.42221.34562.24653.03983.53134.05693.85802.88484.54780.9798
O63.57782.86512.42671.20862.24653.87224.40772.61663.08222.87313.92432.9820
H71.02572.62302.05222.86553.03983.87221.62923.65472.49262.92112.91262.4284
H81.02242.88862.06113.32443.53134.40771.62923.85043.32012.28292.78102.7756
H93.48001.10192.17502.74194.05692.61663.65473.85041.78382.51251.79874.2475
H102.82521.10632.17852.83133.85803.08222.49263.32011.78383.08901.79523.8516
H112.08432.16511.10822.11872.88482.87312.92112.28292.51253.08902.50662.7120
H122.83301.10482.17923.50024.54783.92432.91262.78101.79871.79522.50664.3353
H131.92053.65422.25911.84910.97982.98202.42842.77564.24753.85162.71204.3353

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.662 N1 C3 C4 108.622
N1 C3 H11 106.589 C2 C3 C4 111.292
C2 C3 H11 109.208 C3 N1 H7 108.833
C3 N1 H8 109.768 C3 C2 H9 110.358
C3 C2 H10 110.370 C3 C2 H12 110.513
C3 C4 O5 113.711 C3 C4 O6 123.180
C4 C3 H11 104.816 C4 O5 H13 104.241
O5 C4 O6 123.077 H7 N1 H8 105.402
H9 C2 H10 107.764 H9 C2 H12 109.202
H10 C2 H12 108.567
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability