II.A.3. (XII.A.1.) |
Listing of experimental geometry data for HNCO (Isocyanic acid)
Rotational Constants (cm-1)
See section I.F.4 to change rotational constant units
A | B | C |
---|---|---|
30.63777 | 0.36930 | 0.36410 |
Calculated rotational constants for HNCO (Isocyanic acid).
Point Group Cs
Internal coordinates
(distances (r) in Å) (angles (a) in degrees) (dihedrals (d) in degrees)Description | Value | Connectivity | Reference | Comment | |||
---|---|---|---|---|---|---|---|
Atom 1 | Atom 2 | Atom 3 | Atom 4 | ||||
rNH | 0.995 | 1 | 2 | 1997Bro/Ber:9764 | |||
rCN | 1.214 | 2 | 3 | 1997Bro/Ber:9764 | |||
rCO | 1.164 | 3 | 4 | 1993Eas/Joh:1299 | derived from earlier work, mistype in 1997BRO/BER:9764 | ||
aHNC | 123.9 | 1 | 2 | 3 | 1997Bro/Ber:9764 | ||
aNCO | 172.6 | 2 | 3 | 4 | 1997Bro/Ber:9764 |
Bond descriptions
Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type | Count |
---|---|
H-N | 1 |
C=N | 1 |
C=O | 1 |
Atom | x (Å) | y (Å) | z (Å) |
---|---|---|---|
H1 | 1.3770 | -1.3334 | 0.0000 |
N2 | 0.4122 | -1.0919 | 0.0000 |
C3 | 0.0000 | 0.0500 | 0.0000 |
O4 | -0.5328 | 1.0846 | 0.0000 |
Atom - Atom Distances (Å)
H1 | N2 | C3 | O4 | |
---|---|---|---|---|
H1 | 0.9946 | 1.9519 | 3.0812 | |
N2 | 0.9946 | 1.2140 | 2.3727 | |
C3 | 1.9519 | 1.2140 | 1.1637 | |
O4 | 3.0812 | 2.3727 | 1.1637 |
Calculated geometries for HNCO (Isocyanic acid).
References
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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 cccbdb@nist.gov.
squib | reference | DOI |
---|---|---|
1993Eas/Joh:1299 | ALL East, CS Johnson, WD Allen, Charaterization of the X 1A' state of isocyanic acid, J. Chem. Phys. 98(2), 1299, 1993. | 10.1063/1.464298 |
1997Bro/Ber:9764 | Brown, Berghout, Crim, Raman Spectroscopy of the N-C-) symmetric (v3) and antisymmetric (v2) stretch fundamentals in HNCO, J. of Chem Phys., Vol. 107, #23, pgs. 9764-9771 | 10.1063/1.475274 |
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