Place coordinates in a circle with foreach with tikz

Question

I tried to place coordinates as a circle and use them later to draw lines between the coordinates. To do so I thought it should be possible to use a foreach loop which works out perfectly if I use nodes, but not with coordinates. What is my mistake? Or does the loop just not work with coordinates? Thanks for your help.

\foreach \pos/\name in {{(60:4)/1}, {(30:4)/2}, {(0:4)/3}, {(330:4)/4}, {(300:4)/5}, {(270:4)/6}, {(240:4)/7}, {(210:4)/8}, {(180:4)/9}, {(150:4)/10}, {(120:4)/11}, {(90:4)/12}}
    \coordinate (\name) at \pos {};     
\draw (1) -- (2);
\draw (3) -- (5) -- (4) -- (7);
\draw (8) -- (9) -- (12) -- (10) -- (11);

Answer 1

\foreach is more powerful. Option evaluate can be used to calculate the angle:

\documentclass[tikz]{standalone}

\begin{document}
\begin{tikzpicture}
  \draw
    \foreach \i [evaluate=\i as \angle using 90 - \i * 30] in {1, ..., 12} {
      (\angle:4) coordinate (\i)
    }
    (1) -- (2)
    (3) -- (5) -- (4) -- (7)
    (8) -- (9) -- (12) -- (10) -- (11)
  ;
\end{tikzpicture}
\end{document}

Answer 2

I think the following works:

\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\foreach \pos / \name in {60:4/1, 30:4/2, 0:4/3, 330:4/4, 300:4/5, 270:4/6, 240:4/7, 210:4/8, 180:4/9, 150:4/10, 120:4/11, 90:4/12} \coordinate (\name) at (\pos);
\draw (1) -- (2);
\draw (3) -- (5) -- (4) -- (7);
\draw (8) -- (9) -- (12) -- (10) -- (11);
\end{tikzpicture}
\end{document}