Thanks for fast replies and suggestions. I'm writing in English so there are default settings for hyphenation. In the normal text everything is OK, but I have one section in my work which consists entirely of chemical procedures, full of chemical names, formulas, numbers with units etc.
Here is an example:
Code: Select all
\documentclass[12pt,twoside,BCOR=10mm,headsepline]{scrreprt}
\usepackage[version=3]{mhchem}
\usepackage{upgreek}
\newcommand{\nrzw}[1]{\textbf{#1}}
\newcommand{\krs}[1]{\textit{#1}}
\newcommand{\nzw}[1]{\textbf{#1}}
\newcommand{\dgrc}[1]{${#1}\,^{\circ}\mathrm{C}$}
\newcommand{\jto}[1]{\textit{J}\,=\,#1\,Hz, }
\newcommand{\sygnal}[5]{#1 (#2, #3, #4#5)}
\newcommand{\hnmr}[4]{$^1$H~NMR (#1\,MHz, #2, #3$\updelta$):#4}
\newcommand{\uvis}[2]{UV-vis (#1): $\uplambda_{\text{max}}$, nm ($\upvarepsilon \times 10^{-3}$) #2}
\newcommand{\ms}[5]{MS{#1} (\krs{m/z}): #2 calcd for \ce{#3}, #4; found, #5}
\begin{document}
\nzw{5,8-Dibromo-naphtho[2,3-\krs{c}]furan-1,3-dione (\nrzw{RV486}).} The suspension of 2,3-naph\-tha\-le\-ne\-di\-carboxylic anhydride (1.65\,g, 8.3\,mmol) and iodine (60\,mg, 0.23\,mmol) in 10\,mL of water was heated to 50--\dgrc{60} and bromine (4.84\,g, 30.3\,mmol) was added dropwise while stirring. The temperature was increased and the reaction was stirred at gentle reflux for 3\,h. After cooling to rt, the reaction mixture was poured in ice, precipitate was filtered off, washed with water and dried. The yield at this point was 92\% and recrystallization from methanol afforded pure sample of diacid with mp 220--\dgrc{1} (lit.\cite{matsuoka1971} 217-\dgrc{20}).
Anhydride function can be recovered in essentially quantitative yield by refluxing diacid in excess of acetic anhydride for 2\,h. After solvent removal and drying under vacuum, crude product was used without further purification.
\hnmr{600}{\ce{CDCl3}}{TMS, }{
\sygnal{$(-4)\text{--}(-1.5)$}{3H}{br s}{}{NH},
\sygnal{7.87}{2H}{s}{}{naphth.},
\sygnal{7.96}{2H}{m}{}{\ce{C6H4}},
\sygnal{8.30}{1H}{br s}{}{\ce{C6H4}},
\sygnal{8.41}{1H}{br s}{\jto{4.5}}{\ce{C6H4}},
\sygnal{8.57}{2H}{br s}{\jto{4.5}}{$\beta$-CH},
\sygnal{8.77}{2H}{br s}{}{$\beta$-CH},
\sygnal{8.96}{4H}{m}{}{$\beta$-CH+naphth.},
\sygnal{9.12}{2H}{br s}{}{$\beta$-CH}}; \\
\ms{--FD}{[M]$^{{+}\cdot}$}
{C49H19{}^{79}Br^{81}BrF10N5O2}
{1058.97}
{1058.93};
\uvis{DCM}{269 (53,8), 411 (140.1), 562 (21.4), 612 (12.1)}.
\end{document}
in this section I would like to force latex to take care only about straight text edges, even by sacrificing lines' good-looking.
