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Update characterization.mdx
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nicolejung authored Oct 22, 2023
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Expand Up @@ -33,12 +33,12 @@ If a required type of data is not obtainable, the reason for the absence of the
### General formating
- Please use numerals with units of time or measuread. Use space between numbers and units according to common standards: All combinations of number and unit should be given with space. Examples: 12 h, 12 min, 12 °C, 12 mM. <br />
Exceptions: number+% (e.g. yield or concentration), and $, ° (angular degrees), ′ (angular minutes), and ″ (angular seconds). <br />
<i>Examples: </i> the product was obtained in 12% yield or 5% methanol in water. Others: $250, 47°8′23″, 180° (but 180 °C) <br />
Examples: the product was obtained in 12% yield or 5% methanol in water. Others: $250, 47°8′23″, 180° (but 180 °C) <br />
- data should be quoted with decimal points and negative exponents (e.g., 25.8 J K−1 mol−1).
- Use the period as the decimal point, never a comma. Use numerals before and after a decimal point. 0.25 (not .25) 78.0 or 78 (not 78.)
- For ranges in scientific notation, retain all parts of all numbers or avoid ambiguity by use of parentheses or other enclosing marks. 9.2 × 10–3 to 12.6 × 10–3 or (9.2–12.6) × 10–3 (not 9.2 to 12.6 × 10–3).
- Leave a space before and after mathematical operators that function as verbs or conjunctions, that is, they have numbers on both sides or a symbol for a variable on one side and a number on the other.
<i>Examples: </i> 20 ± 2% 3.24 ± 0.01 4 × 5 cm 8 × 10–4 k ≥ 420 s–1 p < 0.01 Tg = 176 °C.
Examples: 20 ± 2% 3.24 ± 0.01 4 × 5 cm 8 × 10–4 k ≥ 420 s–1 p < 0.01 Tg = 176 °C.
Exception: Leave no space around a slash (a/b), a ratio colon (1:10), or a centered dot (PM·V).
- Use an en dash to express “to”: 12–20 mins, 10–13 mL.
Exception 1: Please use “to” (not the en dash) if one or both numbers are negative or include another symbol: –10 to +10 °C, –10 to –20 °C, ≈100 to 110, 100 to >110 mL, <1 to 1.5 mg.
Expand All @@ -55,12 +55,12 @@ exception 2 Use the preferred unit of a discipline, even when the numbers requir
- When element symbols are used with a type of reaction as a noun or adjective, use normal type for the symbol and hyphenate it to the word that follows it. N-acetylated, N-acetylation, N-oxidation, N-oxidized, O-substituted, O-substitution.
- Use italic type for the capital H that denotes indicated or added hydrogen. 1<i>H</i>-1,3-diazepine, 3<i>H</i>-fluorene 2H-indene
- Use Greek letters, not the spelled-out forms, in chemical names to denote position or stereochemistry. Use a hyphen to separate them from the chemical name. α-amino acid (not alpha amino acid), β-naphthol (not beta naphthol).
- Use italic type for positional, stereochemical, configurational, and descriptive structural prefixes when they appear with the chemical name or formula. Use a hyphen to separate them from the chemical name. <i>Examples: abeo, ac, altro, amphi, anti, antiprismo, ar, arachno, as, asym, c, catena, cis, cisoid, closo, cyclo, d, dodecahedro, E, endo, erythro, exo, facgem, hexahedro, hexaprismo, hypho, icosahedro, klado, l, m, M, mer, meso, n, nido, o, octahedro, p, P, pentaprismo, quadro, r, R, R∗, rel, retro, ribo, s, S, S∗, sec, sn, sym, syn, t, tert, tetrahedro, threo, trans, transoid, triangulo, triprismo, uns, vic, xylo, Z</i>.
- Use italic type for positional, stereochemical, configurational, and descriptive structural prefixes when they appear with the chemical name or formula. Use a hyphen to separate them from the chemical name. Examples: abeo, ac, altro, amphi, anti, antiprismo, ar, arachno, as, asym, c, catena, cis, cisoid, closo, cyclo, d, dodecahedro, E, endo, erythro, exo, facgem, hexahedro, hexaprismo, hypho, icosahedro, klado, l, m, M, mer, meso, n, nido, o, octahedro, p, P, pentaprismo, quadro, r, R, R∗, rel, retro, ribo, s, S, S∗, sec, sn, sym, syn, t, tert, tetrahedro, threo, trans, transoid, triangulo, triprismo, uns, vic, xylo, Z.
- Do not capitalize prefixes that are shown here as lowercase, even at the beginning of a sentence or in a title and never use lower case for those that are written in capital letters. Enclose the prefixes E, R, R∗, S, S∗, and Z in parentheses. <i>anti</i>-bicyclo[3.2.1]octan-8-amine, <i>ar</i>-chlorotoluene, <i>cis</i>-diamminedichloroplatinum, <i>cyclo</i>-hexasulfur, c-S6; (<i>E,E</i>)-2,4-hexadienoic acid; <i>m</i>-ethylpropylbenzene; <i>o</i>-dibromobenzene, <i>p</i>-aminoacetanilide; (<i>S</i>)-2,3-dihydroxypropanoic acid; 5-<i>sec</i>-butylnonane.
- Multiplying affixes are integral parts of the chemical name; they are set in normal type and are always closed up to the rest of the name (without hyphens). Use hyphens only to set off intervening locants or descriptors. Use enclosing marks (parentheses, brackets, or braces) to ensure clarity or to observe other recommended nomenclature conventions. Multiplying prefixes include the following:
- hemi, mono, di, tri, tetra, penta, hexa, hepta, octa, ennea, nona, deca, deka, undeca, dodeca, etc.
- semi, uni, sesqui, bi, ter, quadri, quater, quinque, sexi, septi, octi, novi, deci, etc.
- bis, tris, tetrakis, pentakis, hexakis, heptakis, octakis, nonakis, decakis, etc. <br />
<i>Examples:</i> 3,4′-bi-2-naphthol; 2,2′-bipyridine; bis(benzene)chromium(0); 1,4-bis(3-bromo-1- oxopropyl)piperazine; 1,3-bis(diethylamino)propane; di-tert-butyl malonate dichloride.
Examples: 3,4′-bi-2-naphthol; 2,2′-bipyridine; bis(benzene)chromium(0); 1,4-bis(3-bromo-1- oxopropyl)piperazine; 1,3-bis(diethylamino)propane; di-tert-butyl malonate dichloride.


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