| Nature Chemistry |
Evidence of sample
purity is requested for each new compound.
Methods for purity analysis depend on the compound class. For most
organic and organometallic compounds, purity may be demonstrated by
high field 1H NMR or 13C NMR data, although
elemental analysis (±0.4%) is encouraged for small molecules. |
| Journal of Organic Chemistry |
Found values for carbon, hydrogen, and nitrogen should be within
0.4% of the Calcd values for the proposed formula. The need to include
fractional molecules of solvent or water in the molecular formula
to improve the fit of the data usually reflects incomplete purification
of the sample. |
| Inorganic Chemistry |
For all new compounds, evidence adequate to establish
both
identity and degree of purity (homogeneity) must be provided. For
known compounds prepared by a new or modified synthetic procedure,
the types of physical and spectroscopic data that were found to match
cited literature data should be identified, and purity documentation
should be provided. |
| Organometallics |
Organometallics strongly encourages
the characterization
of all new compounds by elemental analysis. For such data, agreement
of calculated and found values within 0.4% (e.g., Calcd, 20.14%; Found,
20.54%) is considered acceptable. For deviations slightly outside
the accepted range, authors are encouraged to provide an explanation
in the relevant paragraph of the Experimental section, and to include
a statement such as “although these results are outside the
range viewed as establishing analytical purity, they are provided
to illustrate the best values obtained to date.” |
| Organic Letters |
To support
the molecular formula assignment, either the HRMS
data accurate within 5 ppm, or combustion elemental analysis data
accurate within 0.4%, must be reported for new compounds. |
| Journal of the American Chemical Society |
Evidence for elemental constitution must be provided
by either
elemental analysis (e.g., combustion analysis, microprobe analysis)
or mass spectrometry. While an X-ray diffraction structure is not
considered definitive proof of elemental composition, it is acceptable
evidence for composition providing that the results of other physical
methods concerning the characterization are conclusive. |
| Angewandte Chemie |
Data
should be provided to an accuracy within ±0.4%. |
| European Journal of Inorganic Chemistry |
Data should be provided to an accuracy within ±0.4%. |
| Chemistry—A European Journal |
Data should be provided to an accuracy within ±0.4%. |
| Chemical Science |
For identification purposes for new compounds, an accuracy
to within ±0.3% is expected, and in exceptional cases, to within
±0.5% is required. If a molecular weight is to be included, the
appropriate form is [Found: C, 63.1; H, 5.4%; M (mass spectrum), 352
(or simply M+, 352). C13H13NO4 requires
C, 63.2; H, 5.3%; M, 352]. |
| Chemical
Communications |
Elemental analysis (within ±0.4%
of the calculated value)
is required to confirm 95% sample purity and corroborate isomeric
purity. |
| Dalton Transactions |
This should include elemental analyses that agree
to within
±0.4% of the calculated values. |
| European Journal of Organic Chemistry |
Data
should be provided to an accuracy within ±0.4%. |
| Organic and Biomolecular Chemistry |
High-resolution mass spectroscopy (HRMS), with a found value
within 0.003 m/z unit of the calculated
value of a parent-derived ion. Elemental analysis data may be provided
if HRMS is not available. |
| Chem Catalysis |
Evidence of purity is a requirement for all new compounds.
The appropriate methods are dependent on the type of compounds reported.
For organic and organometallic compounds, high-field 1H
and 13C NMR can be used to show purity. Ideally, elemental
analysis (±0.4%) should be included for small molecules. |
| Chem |
Evidence of
purity is a requirement for all new compounds.
The appropriate methods are dependent on the type of compounds reported.
For organic and organometallic compounds, high-field 1H
and 13C NMR can be used to show purity. Ideally, elemental
analysis (±0.4%) should be included for small molecules. |
