return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Experimental > One molecule all properties

Experimental data for CH3OCH2CN (Methoxyacetonitrile)

22 02 02 11 45
Other names
Acetonitrile, methoxy-; Methoxyacetonitrile; NCCH2OCH3; 2-methoxyacetonitrile;
INChI INChIKey SMILES IUPAC name
InChI=1S/C3H5NO/c1-5-3-2-4/h3H2,1H3 QKPVEISEHYYHRH-UHFFFAOYSA-N N#CCOC 2-methoxyacetonitrile
State Conformation
1A' CS
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -35.65 0.66 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   0.66 kJ mol-1 webbook
Entropy (298.15K) entropy     J K-1 mol-1  
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity     kJ mol-1  
Barrier to Internal Rotation 18.9   kJ mol-1 1993Dur/Tan:851 v1=153+-9, V2=-619+-8, V3=1000+-2, V4=-100+-2 cm-1
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A 3018   1993Dur/Tan:851      
2 A 2985   1993Dur/Tan:851      
3 A 2958   1993Dur/Tan:851      
4 A 2945   1993Dur/Tan:851      
5 A 2922   1993Dur/Tan:851      
6 A 2245   1993Dur/Tan:851      
7 A 1472   1993Dur/Tan:851      
8 A 1452   1993Dur/Tan:851      
9 A 1439   1993Dur/Tan:851      
10 A 1431   1993Dur/Tan:851      
11 A 1368   1993Dur/Tan:851      
12 A 1287   1993Dur/Tan:851      
13 A 1199   1993Dur/Tan:851      
14 A 1161   1993Dur/Tan:851      
15 A 1127   1993Dur/Tan:851      
16 A 1016   1993Dur/Tan:851      
17 A 925   1993Dur/Tan:851      
18 A 890   1993Dur/Tan:851      
19 A 586   1993Dur/Tan:851      
20 A 404   1993Dur/Tan:851      
21 A 347   1993Dur/Tan:851      
22 A 243   1993Dur/Tan:851      
23 A 170   1993Dur/Tan:851      
24 A 113   1993Dur/Tan:851      

Calculated vibrational frequencies for CH3OCH2CN (Methoxyacetonitrile).
Gas-phase IR spectra can be found in the NIST Chemistry Webbook here.
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.39672 0.11419 0.09578 1974Kew:509

Calculated rotational constants for CH3OCH2CN (Methoxyacetonitrile).
Product of moments of inertia moments of inertia
1104063amu3Å6   5.0554741356075E-114gm3 cm6
Geometric Data
picture of Methoxyacetonitrile

Point Group Cs


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for CH3OCH2CN (Methoxyacetonitrile).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 5
C-C 1
C#N 1
C-O 2

Connectivity
Atom 1 Atom 2
C1 O2
C1 H6
C1 H7
C1 H8
O2 C3
C3 C4
C3 H9
C3 H10
C4 N5
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A'

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
10.750       webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A' Cs True 2.400 1.370 1.110 2.980 1974Kew:509 moments are a,b,c not x,y,z Cs 2 3
1 2 1A C1 False           C1 3 5
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for CH3OCH2CN (Methoxyacetonitrile).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A' Cs True       Cs 2 3
1 2 1A C1 False       C1 3 5

Calculated electric quadrupole moments for CH3OCH2CN (Methoxyacetonitrile).

References
By selecting the following links, you may be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].
squib reference DOI
1974Kew:509 R Kewley "Microwave Spectrum of Methoxyacetonitrile" Can. J. Chem. 52, 509, 1974 10.1139/v74-080
1993Dur/Tan:851 Durig, Tang, and Phan. Raman and Infrared Spectra, Conformational Stability, Barriers to Internal Rotation, Ab Initio Calculations and Vibrational Assignment of Cyanomethyl Methyl Ether. J. Raman. Spec. Vol. 24. pgs. 851-865. 10.1002/jrs.1250241206
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

Got a better number? Please email us at [email protected]


Browse
PreviousNext