![\begin{tikzpicture}[declare function = {bd=0.958; ba=104.4776; Hvdw=1.20; Ovdw=1.52;lw=1.5; vdw=2;}] \coordinate (O) at (0,0); \coordinate (a) at (bd,0); \coordinate (aa) at (1.5*bd,0); \coordinate (b) at ($(O)!bd!ba : (a)$); \coordinate (d) at ($(O)!bd!ba/2 : (aa)$); \draw [line width = lw, gray] (O) -- (a); \draw [line width = lw, gray] (O) -- (b); \draw [teal] (O) edge [out=-90,in=-90] (a) ; \draw [teal, ultra thick, -stealth] (O) -- (d) node[above,blue]{\tiny $1.855\rm\,D$}; \node[blue] at (bd/2, -0.4) {\tiny$0.958\rm\,\AA$}; \draw[blue] pic [semithick, densely dotted, < - >, >=stealth, "$104.475^\circ$", font=\tiny, draw=teal, angle eccentricity=1.7, angle radius = 5mm] { angle=a--O--b }; \shade[ball color = red, opacity = 1] (O) circle (vdw*1.52 mm); \shade[ball color = white, opacity = 1] (a) circle (vdw*1.2 mm); \shade[ball color = white, opacity = 1] (b) circle (vdw*1.2 mm); \node [xshift=-7mm] at (O) {\tiny $-0.331$}; \node [xshift=7mm] at (a) {\tiny $+0.165$}; \node [xshift=-7mm] at (b) {\tiny $+0.165$}; \end{tikzpicture}](https://gaia-sb.iwate-med.ac.jp/pharm/filter/tex/pix.php/06f46e39b479c0a76190530f04a2b4bd.svg "\begin{tikzpicture}[declare function = {bd=0.958; ba=104.4776; Hvdw=1.20; Ovdw=1.52;lw=1.5; vdw=2;}] \coordinate (O) at (0,0); \coordinate (a) at (bd,0); \coordinate (aa) at (1.5*bd,0); \coordinate (b) at ($(O)!bd!ba : (a)$); \coordinate (d) at ($(O)!bd!ba/2 : (aa)$); \draw [line width = lw, gray] (O) -- (a); \draw [line width = lw, gray] (O) -- (b); \draw [teal] (O) edge [out=-90,in=-90] (a) ; \draw [teal, ultra thick, -stealth] (O) -- (d) node[above,blue]{\tiny $1.855\rm\,D$}; \node[blue] at (bd/2, -0.4) {\tiny$0.958\rm\,\AA$}; \draw[blue] pic [semithick, densely dotted, < - >, >=stealth, \"$104.475^\circ$\", font=\tiny, draw=teal, angle eccentricity=1.7, angle radius = 5mm] { angle=a--O--b }; \shade[ball color = red, opacity = 1] (O) circle (vdw*1.52 mm); \shade[ball color = white, opacity = 1] (a) circle (vdw*1.2 mm); \shade[ball color = white, opacity = 1] (b) circle (vdw*1.2 mm); \node [xshift=-7mm] at (O) {\tiny $-0.331$}; \node [xshift=7mm] at (a) {\tiny $+0.165$}; \node [xshift=-7mm] at (b) {\tiny $+0.165$}; \end{tikzpicture}")
\begin{tikzpicture}[
declare function = {
bd=0.958; ba=104.4776; Hvdw=1.20; Ovdw=1.52;
lw=1.5; vdw=2;
}]
\coordinate (O) at (0,0);
\coordinate (a) at (bd,0);
\coordinate (aa) at (1.5*bd,0);
\coordinate (b) at ($(O)!bd!ba : (a)$);
\coordinate (d) at ($(O)!bd!ba/2 : (aa)$);
\draw [line width = lw, gray] (O) -- (a);
\draw [line width = lw, gray] (O) -- (b);
\draw [teal] (O) edge [out=-90,in=-90] (a) ;
\draw [teal, ultra thick, -stealth] (O) -- (d) node[above,blue]{\tiny $1.855\rm\,D$};
\node[blue] at (bd/2, -0.4) {\tiny$0.958\rm\,\AA$};
\draw[blue] pic [semithick, densely dotted, < - >, >=stealth, "$104.475^\circ$", font=\tiny, draw=teal, angle eccentricity=1.7, angle radius = 5mm] { angle=a--O--b };
\shade[ball color = red, opacity = 1] (O) circle (vdw*1.52 mm);
\shade[ball color = white, opacity = 1] (a) circle (vdw*1.2 mm);
\shade[ball color = white, opacity = 1] (b) circle (vdw*1.2 mm);
\node [xshift=-7mm] at (O) {\tiny $-0.331$};
\node [xshift=7mm] at (a) {\tiny $+0.165$};
\node [xshift=-7mm] at (b) {\tiny $+0.165$};
\end{tikzpicture}