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

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-322.387322
Energy at 298.15K-322.396619
HF Energy-321.764837
Nuclear repulsion energy244.335667
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 MP2/SDD
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 3634 3508 9.71      
2 A 3516 3394 1.88      
3 A 3339 3223 216.84      
4 A 3151 3041 12.37      
5 A 3128 3020 33.04      
6 A 3069 2963 16.49      
7 A 3026 2921 21.92      
8 A 1715 1655 42.97      
9 A 1685 1627 208.01      
10 A 1541 1487 11.59      
11 A 1535 1481 4.93      
12 A 1455 1405 10.17      
13 A 1382 1334 23.50      
14 A 1353 1306 19.11      
15 A 1329 1283 349.73      
16 A 1287 1243 5.27      
17 A 1186 1145 20.00      
18 A 1116 1077 16.94      
19 A 1056 1019 50.56      
20 A 1026 990 2.46      
21 A 950 917 119.57      
22 A 895 864 148.99      
23 A 841 812 118.43      
24 A 768 741 2.22      
25 A 692 668 13.97      
26 A 603 582 8.12      
27 A 510 492 1.68      
28 A 384 371 0.74      
29 A 335 324 12.05      
30 A 282 272 17.42      
31 A 258 249 4.44      
32 A 233 225 1.91      
33 A 51 49 0.91      

Unscaled Zero Point Vibrational Energy (zpe) 23665.1 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 22843.9 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 MP2/SDD
ABC
0.15660 0.10365 0.07292

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.300 -1.148 -0.258
C2 1.279 1.263 0.489
C3 0.633 0.191 -0.443
C4 -0.885 0.051 -0.093
O5 -1.201 -1.144 0.558
O6 -1.736 0.937 -0.343
H7 2.197 -1.093 0.230
H8 1.391 -1.687 -1.124
H9 0.723 2.211 0.411
H10 1.249 0.923 1.540
H11 0.692 0.541 -1.490
H12 2.329 1.440 0.197
H13 -0.350 -1.676 0.601

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.52351.50682.49802.63023.68331.02291.02393.47302.74292.17722.82151.9335
C22.52351.56002.54743.45633.14402.54153.36331.10201.10522.18641.10443.3616
C31.50681.56001.56472.47942.48542.13232.13622.19502.20171.10592.20102.3540
C42.49802.54741.56471.39731.25303.30393.04412.73962.82512.16393.51341.9369
O52.63023.45632.47941.39732.33033.41423.13703.87063.35253.25884.38931.0042
O63.68333.14402.48541.25302.33034.46274.15562.87013.52922.71414.13103.1047
H71.02292.54152.13233.30393.41424.46271.68353.62252.58462.80952.53622.6393
H81.02393.36332.13623.04413.13704.15561.68354.24193.73192.36363.52092.4509
H93.47301.10202.19502.73963.87062.87013.62254.24191.79202.53031.79444.0369
H102.74291.10522.20172.82513.35253.52922.58463.73191.79203.10451.79953.1925
H112.17722.18641.10592.16393.25882.71412.80952.36362.53033.10452.51623.2212
H122.82151.10442.20103.51344.38934.13102.53623.52091.79441.79952.51624.1288
H131.93353.36162.35401.93691.00423.10472.63932.45094.03693.19253.22124.1288

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 110.730 N1 C3 C4 108.823
N1 C3 H11 111.965 C2 C3 C4 109.227
C2 C3 H11 109.008 C3 N1 H7 113.515
C3 N1 H8 113.785 C3 C2 H9 109.896
C3 C2 H10 110.230 C3 C2 H12 110.226
C3 C4 O5 113.550 C3 C4 O6 123.416
C4 C3 H11 106.986 C4 O5 H13 106.370
O5 C4 O6 123.016 H7 N1 H8 110.669
H9 C2 H10 108.559 H9 C2 H12 108.831
H10 C2 H12 109.061
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability