National Institute of Standards and Technology

Computational Chemistry Comparison and Benchmark DataBase
Release 22	May 2022
NIST Standard Reference Database 101

I	Introduction
II	Experimental data
III	Calculated data
IV	Data comparisons
V	Cost comparisons
VI	Input and output files
VII	Tutorials and Units
VIII	Links to other sites
IX	Feedback
X	Older CCCBDB versions
XII	Geometries
XIII	Vibrations
XIV	Reaction data
XV	Entropy data
XVI	Bibliographic data
XVII	Ion data
XVIII	Bad calculations
XIX	Index of properties
XX	H-bond dimers
XXI	Oddities

---

NIST policy on privacy, security, and accessibility.

---

© 2013 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

The National Institute of Standards and Technology (NIST) is an agency of the U.S. Department of Commerce.

Please send questions, comments, corrections, additions and suggestions to cccbdb@nist.gov.

II.B.4. (XII.A.4.)

List of experimental bond angles of type aFSiF

Bond angles in degrees.
Click on an entry for more experimental geometry data.

Bond type	Species	Name	Angle	Comment
aFSiF	SiF2	Silicon difluoride	100.77
aFSiF	SiH2F2	difluorosilane	107.78
aFSiF	SiHF3	trifluorosilane	108.23
aFSiF	SiF4	Silicon tetrafluoride	109.47	symmetry
aFSiF	SiF3	Silicon trifluoride radical	109.94	fixed
Average			107.24	±3.72
Min			100.77
Max			109.94