\documentclass[10pt,a4paper]{article} % Packages \usepackage{fancyhdr} % For header and footer \usepackage{multicol} % Allows multicols in tables \usepackage{tabularx} % Intelligent column widths \usepackage{tabulary} % Used in header and footer \usepackage{hhline} % Border under tables \usepackage{graphicx} % For images \usepackage{xcolor} % For hex colours %\usepackage[utf8x]{inputenc} % For unicode character support \usepackage[T1]{fontenc} % Without this we get weird character replacements \usepackage{colortbl} % For coloured tables \usepackage{setspace} % For line height \usepackage{lastpage} % Needed for total page number \usepackage{seqsplit} % Splits long words. %\usepackage{opensans} % Can't make this work so far. Shame. Would be lovely. \usepackage[normalem]{ulem} % For underlining links % Most of the following are not required for the majority % of cheat sheets but are needed for some symbol support. \usepackage{amsmath} % Symbols \usepackage{MnSymbol} % Symbols \usepackage{wasysym} % Symbols %\usepackage[english,german,french,spanish,italian]{babel} % Languages % Document Info \author{teganski} \pdfinfo{ /Title (organic-chemistry-exam-1.pdf) /Creator (Cheatography) /Author (teganski) /Subject (Organic Chemistry Exam 1 Cheat Sheet) } % Lengths and widths \addtolength{\textwidth}{6cm} \addtolength{\textheight}{-1cm} \addtolength{\hoffset}{-3cm} \addtolength{\voffset}{-2cm} \setlength{\tabcolsep}{0.2cm} % Space between columns \setlength{\headsep}{-12pt} % Reduce space between header and content \setlength{\headheight}{85pt} % If less, LaTeX automatically increases it \renewcommand{\footrulewidth}{0pt} % Remove footer line \renewcommand{\headrulewidth}{0pt} % Remove header line \renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit % This two commands together give roughly % the right line height in the tables \renewcommand{\arraystretch}{1.3} \onehalfspacing % Commands \newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour \newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols \newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns \newcommand{\tn}{\tabularnewline} % Required as custom column type in use % Font and Colours \definecolor{HeadBackground}{HTML}{333333} \definecolor{FootBackground}{HTML}{666666} \definecolor{TextColor}{HTML}{333333} \definecolor{DarkBackground}{HTML}{7F49A3} \definecolor{LightBackground}{HTML}{F7F3F9} \renewcommand{\familydefault}{\sfdefault} \color{TextColor} % Header and Footer \pagestyle{fancy} \fancyhead{} % Set header to blank \fancyfoot{} % Set footer to blank \fancyhead[L]{ \noindent \begin{multicols}{3} \begin{tabulary}{5.8cm}{C} \SetRowColor{DarkBackground} \vspace{-7pt} {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}} } \end{tabulary} \columnbreak \begin{tabulary}{11cm}{L} \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Organic Chemistry Exam 1 Cheat Sheet}}}} \\ \normalsize{by \textcolor{DarkBackground}{teganski} via \textcolor{DarkBackground}{\uline{cheatography.com/211266/cs/45736/}}} \end{tabulary} \end{multicols}} \fancyfoot[L]{ \footnotesize \noindent \begin{multicols}{3} \begin{tabulary}{5.8cm}{LL} \SetRowColor{FootBackground} \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}} \\ \vspace{-2pt}teganski \\ \uline{cheatography.com/teganski} \\ \end{tabulary} \vfill \columnbreak \begin{tabulary}{5.8cm}{L} \SetRowColor{FootBackground} \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}} \\ \vspace{-2pt}Not Yet Published.\\ Updated 23rd February, 2025.\\ Page {\thepage} of \pageref{LastPage}. \end{tabulary} \vfill \columnbreak \begin{tabulary}{5.8cm}{L} \SetRowColor{FootBackground} \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}} \\ \SetRowColor{white} \vspace{-5pt} %\includegraphics[width=48px,height=48px]{dave.jpeg} Measure your website readability!\\ www.readability-score.com \end{tabulary} \end{multicols}} \begin{document} \raggedright \raggedcolumns % Set font size to small. Switch to any value % from this page to resize cheat sheet text: % www.emerson.emory.edu/services/latex/latex_169.html \footnotesize % Small font. \begin{multicols*}{3} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Ranking Radical Stability}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{1. Benzylic/Allylic Radicals {\bf{{[}MOST STABLE{]}}}} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{2. Tertiary (3°) Radicals} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{3. Secondary (2°) Radicals} \tn % Row Count 3 (+ 1) % Row 3 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{4. Primary (1°) Radicals} \tn % Row Count 4 (+ 1) % Row 4 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{5. Methyl Radicals} \tn % Row Count 5 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Key Factors Affecting Stability: \newline {\bf{Resonance Stabilization}} \textasciicircum{}(Allylic \& Benzylic \textgreater{} Non-resonance stablized)\textasciicircum{} \newline {\bf{Hyperconjugation}} \{\{nl\}\} \textasciicircum{}(More alkyl groups donate electron density)\textasciicircum{} \newline {\bf{Inductive Effects}} \{\{nl\}\} \textasciicircum{}(Electron-withdrawing groups destabilize)\textasciicircum{}} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{1.8308 cm} p{0.4577 cm} x{2.2885 cm} } \SetRowColor{DarkBackground} \mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Number of Unique Products}} \tn % Row 0 \SetRowColor{LightBackground} {\bf{NBS}} \{\{nl\}\} \textasciicircum{}(Allylic Bromination)\textasciicircum{} & & {\bf{Cl₂/hv}} \{\{nl\}\} \textasciicircum{}(Radical Chlorination)\textasciicircum{} \tn % Row Count 3 (+ 3) % Row 1 \SetRowColor{white} {\emph{Selective}} \{\{nl\}\} \textasciicircum{}Only abstracts the {\bf{allylic hydrogen}}\textasciicircum{} & & {\emph{Less selective}} \{\{nl\}\} \textasciicircum{}attacks {\bf{all possible C-H bonds}}\textasciicircum{} \tn % Row Count 7 (+ 4) % Row 2 \SetRowColor{LightBackground} Favors one major product due to resonance stabilization & & {\bf{More radical products}} due to no preference \tn % Row Count 11 (+ 4) % Row 3 \SetRowColor{white} Highly Selective → Major product at most stable radical site & & Non-selective → Multiple products \tn % Row Count 15 (+ 4) \hhline{>{\arrayrulecolor{DarkBackground}}---} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Arrow Pushing in Radical Reactions}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{Fishhook Arrows}} → movement of 1 electron} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{Initiation}} → arrows depict homolytic cleavage} \tn % Row Count 3 (+ 2) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{Propagation}} → 1 radical reacts to form another} \tn % Row Count 5 (+ 2) % Row 3 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{Termination}} → 2 radicals combine to form a stable molecule} \tn % Row Count 7 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Terms to Know}} \tn % Row 0 \SetRowColor{LightBackground} {\bf{Markovnikov's Rule}} → {\emph{addition reactions}} proton added to the {\emph{carbon}} with the {\bf{most}} {\emph{hydrogen}} atoms attached & {\bf{Geminal}} → 2 atoms bonded to the {\emph{same side}} of the carbon \tn % Row Count 6 (+ 6) % Row 1 \SetRowColor{white} {\bf{Anti-Markovnivkov's Rule}} → {\emph{addition reactions}} proton added to the {\emph{carbon}} with the {\bf{least}} {\emph{hydrogen}} atoms attached & {\bf{Vicinal}} → 2 atoms bonded to {\emph{same}} carbon \tn % Row Count 13 (+ 7) % Row 2 \SetRowColor{LightBackground} {\bf{Zaitsev's Rule}} → {\emph{elimination reaction}}, major product is the {\bf{more stable}} alkene with the {\bf{highly substituted}} double bond & {\bf{Syn-Addition}} → added to {\emph{same side}} of compound \tn % Row Count 20 (+ 7) % Row 3 \SetRowColor{white} {\bf{E/Z System}} → Prioritize the 2 groups attached to each carbon relative to one another. \{\{nl\}\} {\emph{Higher}} priority groups are: \{\{nl\}\} {\bf{cis/same side}} → {\bf{Z}} \{\{nl\}\} {\bf{trans/opposite sides}} → {\bf{E}} & {\bf{Anti-Addition}} → added to {\emph{different sides }}of compounds \tn % Row Count 31 (+ 11) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Oxidation State of Carbons}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{C-H bond}} → carbon gains {\bf{-1}} per hydrogen} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{C-C bond}} → no change {\bf{(0)}}} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{C-X bond}} → carbon loses {\bf{+1}} per electronegative atom} \tn % Row Count 4 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{The {\bf{oxidation state}} of a carbon atom depends on its {\bf{bonds}} to atoms of different electronegativities} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{1.2531 cm} p{0.4177 cm} x{2.0885 cm} p{0.4177 cm} } \SetRowColor{DarkBackground} \mymulticolumn{4}{x{5.377cm}}{\bf\textcolor{white}{NMR}} \tn % Row 0 \SetRowColor{LightBackground} {\bf{\textasciicircum{}1\textasciicircum{}H NMR}} \{\{nl\}\} & & {\bf{\textasciicircum{}13\textasciicircum{}C NMR}} \{\{nl\}\} & \tn % Row Count 2 (+ 2) % Row 1 \SetRowColor{white} {\emph{\textasciicircum{}Chemical Shift Trends\textasciicircum{}}} & & {\emph{\textasciicircum{}Chemical Shift Trends\textasciicircum{}}} & \tn % Row Count 5 (+ 3) % Row 2 \SetRowColor{LightBackground} {\bf{0-2 ppm}} → Alkane & & {\bf{0-50 ppm}} → Alkane & \tn % Row Count 7 (+ 2) % Row 3 \SetRowColor{white} {\bf{2-3 ppm}} → Allylic, benzylic, alkynyl & & {\bf{50-100 ppm}} → Alcohol, ether, alkynes & \tn % Row Count 11 (+ 4) % Row 4 \SetRowColor{LightBackground} {\bf{4-6 ppm}} → Alkene & & {\bf{100-150 ppm}} → Aromatic, alkene & \tn % Row Count 13 (+ 2) % Row 5 \SetRowColor{white} {\bf{6-8 ppm}} → Aromatic & & {\bf{150-200 ppm}} Carbonyl (ketone, aldehyde, carboxylic acid) & \tn % Row Count 16 (+ 3) % Row 6 \SetRowColor{LightBackground} \mymulticolumn{4}{x{5.377cm}}{{\bf{9-10 ppm}} →\{\{nl\}\} Aldehyde} \tn % Row Count 17 (+ 1) % Row 7 \SetRowColor{white} \mymulticolumn{4}{x{5.377cm}}{{\bf{10-12 ppm}} →\{\{nl\}\} Carboxylic acid (broad)} \tn % Row Count 18 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}----} \SetRowColor{LightBackground} \mymulticolumn{4}{x{5.377cm}}{{\bf{Splitting Patterns}} \textasciicircum{}(n+1 rule)\textasciicircum{} \newline {\bf{Singlet}} → no adjacent protons \newline {\bf{Doublet}} → 1 adjacent proton \newline {\bf{Triplet}} → 2 adjacent protons} \tn \hhline{>{\arrayrulecolor{DarkBackground}}----} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Starting Material → Alkene}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{\textasciicircum{}Name\textasciicircum{}} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{Hydrohalogenation \{\{nl\}\} (HX Addition)}}} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{Hydrodrohalogenation \{\{nl\}\} (HX Addition with Peroxide)}}} \tn % Row Count 4 (+ 2) % Row 3 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{Acid-Catalyzed Hydration}}} \tn % Row Count 5 (+ 1) % Row 4 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{Oxymercuration-Demurcuration}}} \tn % Row Count 6 (+ 1) % Row 5 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{Hydroboration-Oxidation}}} \tn % Row Count 7 (+ 1) % Row 6 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{Halogenation \{\{nl\}\} (X\textasciitilde{}2\textasciitilde{} Addition)}}} \tn % Row Count 8 (+ 1) % Row 7 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{Halohydrin Formation}}} \tn % Row Count 9 (+ 1) % Row 8 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{Hydrogenation}}} \tn % Row Count 10 (+ 1) % Row 9 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{Dihydroxylation (Syn)}}} \tn % Row Count 11 (+ 1) % Row 10 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{Dihydroxylation (Anti)}}} \tn % Row Count 12 (+ 1) % Row 11 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{Ozonlysis}}} \tn % Row Count 13 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{IR Spectroscopy}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\emph{\textasciicircum{}Key Peaks\textasciicircum{}}}} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{O-H (Alcohol)}} → 3200-3600 cm\textasciicircum{}-1\textasciicircum{} (broad)} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{C-H (Alkanes)}} → 2800-3000 cm\textasciicircum{}-1\textasciicircum{}} \tn % Row Count 3 (+ 1) % Row 3 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{C=O (Carbonyls)}} → \textasciitilde{}1700 cm\textasciicircum{}-1\textasciicircum{}} \tn % Row Count 4 (+ 1) % Row 4 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{C=C (Alkene)}} → \textasciitilde{}1650 cm\textasciicircum{}-1\textasciicircum{}} \tn % Row Count 5 (+ 1) % Row 5 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{C≡C, C≡N}} → \textasciitilde{}2100-2200 cm\textasciicircum{}-1\textasciicircum{}} \tn % Row Count 6 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{p{0.4977 cm} p{0.4977 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Starting Material → Alkyne}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{2}{x{5.377cm}}{} \tn % Row Count 0 (+ 0) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{1.2531 cm} p{0.4177 cm} x{2.0885 cm} p{0.4177 cm} } \SetRowColor{DarkBackground} \mymulticolumn{4}{x{5.377cm}}{\bf\textcolor{white}{Substitution Reactions}} \tn % Row 0 \SetRowColor{LightBackground} S\textasciitilde{}N\textasciitilde{}1 \textasciicircum{}(Unimolecular)\textasciicircum{} & & S\textasciitilde{}N\textasciitilde{}2 \textasciicircum{}(Bimolecular)\textasciicircum{} & \tn % Row Count 2 (+ 2) % Row 1 \SetRowColor{white} {\bf{Mechanism}} → Two-step; carbocation formation, \seqsplit{nucleophilic} attack & & {\bf{Mechanism}} → One-step; backside attack & \tn % Row Count 8 (+ 6) % Row 2 \SetRowColor{LightBackground} {\bf{Rate}} → Dependent {\emph{only}} on substrate \{\{nl\}\} \textasciicircum{}rate=k{[}R-X{]}\textasciicircum{} & & {\bf{Rate}} → Dependent on {\emph{both}} substrate \& nucleophile \{\{nl\}\} \textasciicircum{}rate=k{[}R-X{]}{[}Nu-{]}\textasciicircum{} & \tn % Row Count 14 (+ 6) % Row 3 \SetRowColor{white} {\bf{Stereochemistry}} → Racemic mixture & & {\bf{Stereochemistry}} → Inversion of configuration & \tn % Row Count 18 (+ 4) % Row 4 \SetRowColor{LightBackground} {\bf{Preferred Conditions}} → Weak nucleophile, polar protic solvent & & {\bf{Preferred Conditions}} → Strong nucleophile, polar aprotic solvent & \tn % Row Count 24 (+ 6) % Row 5 \SetRowColor{white} Tertiary \textgreater{} Secondary \textgreater{} \textasciitilde{}\textasciitilde{}{\emph{Primary}}\textasciitilde{}\textasciitilde{} & & Methyl \textgreater{} Primary \textgreater{} Secondary \textgreater{} \textasciitilde{}\textasciitilde{}{\emph{Tertiary}}\textasciitilde{}\textasciitilde{} & \tn % Row Count 27 (+ 3) \hhline{>{\arrayrulecolor{DarkBackground}}----} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{1.2531 cm} p{0.4177 cm} x{2.0885 cm} p{0.4177 cm} } \SetRowColor{DarkBackground} \mymulticolumn{4}{x{5.377cm}}{\bf\textcolor{white}{Elimination Reactions}} \tn % Row 0 \SetRowColor{LightBackground} {\bf{E1}} \textasciicircum{}(Unimolecular)\textasciicircum{} & & {\bf{E2}} \textasciicircum{}(Bimolecular)\textasciicircum{} & \tn % Row Count 2 (+ 2) % Row 1 \SetRowColor{white} {\bf{Mechanism}} → Two-step; carbocation \seqsplit{intermediate}, base \seqsplit{deprotonates} & & {\bf{Mechanism}} → One-step; concerted β-H abstraction & \tn % Row Count 8 (+ 6) % Row 2 \SetRowColor{LightBackground} {\bf{Rate}} → Dependent {\emph{only}} on substrate & & {\bf{Rate}} → Dependent on {\emph{both}} substrate and base & \tn % Row Count 12 (+ 4) % Row 3 \SetRowColor{white} {\bf{Regiochemistry}} → Zaitsev's Rule \{\{nl\}\} \textasciicircum{}(more substituted alkene favored)\textasciicircum{} & & {\bf{Regiochemistry}} → Zaitsev's Rule \{\{nl\}\} \textasciicircum{}(unless bulky base → Hofmann product)\textasciicircum{} & \tn % Row Count 19 (+ 7) % Row 4 \SetRowColor{LightBackground} {\bf{Stereochemistry}} → Forms most stable alkene & & {\bf{Stereochemistry}} → Anti-periplanar elimination & \tn % Row Count 23 (+ 4) % Row 5 \SetRowColor{white} {\bf{Preferred Conditions}} → Weak base, polar protic solvent & & {\bf{Preferred Conditions}} → Strong base required & \tn % Row Count 28 (+ 5) % Row 6 \SetRowColor{LightBackground} Tertiary \textgreater{} Secondary \textgreater{} \textasciitilde{}\textasciitilde{}{\emph{Primary}}\textasciitilde{}\textasciitilde{} & & Primary \textgreater{} Secondary \textgreater{} Tertiary \{\{nl\}\} \textasciicircum{}(as long as β-H is anti-periplanar)\textasciicircum{} & \tn % Row Count 32 (+ 4) \hhline{>{\arrayrulecolor{DarkBackground}}----} \end{tabularx} \par\addvspace{1.3em} % That's all folks \end{multicols*} \end{document}