2 \begin{pspicture}(-4,-3)(4.5,5.5)
3 \psset{lightsrc=100 10 -20,lightintensity=3,viewpoint=200 30
5 \psframe(-4,-3)(4.5,5.5)
6 {\psset{linewidth=0.5\pslinewidth}
8 /Soufre1 {3.56 [20 16] newsphere
9 dup (Yellow) outputcolors} def
10 /Soufre2 {3.56 [20 16] newsphere
11 {0 0.000 20.10 translatepoint3d} solidtransform
12 dup (Yellow) outputcolors} def
15 7.5 0.5 15 [10 10] newcylindre
16 dup (Red) outputcolors
19 0 0.5 7.5 [10 10] newcylindre
20 dup (Yellow) outputcolors
23 /Liaison{LiaisonR LiaisonY solidfuz} def
24 /Ox {2.17 [20 16] newsphere
25 {0 0 15 translatepoint3d} solidtransform
26 dup (Red) outputcolors} def
27 /LO { Liaison Ox solidfuz} def
28 /LO1 { LO {0 -109.5 0 rotateOpoint3d} solidtransform } def
29 /LOx1 { LO1 {0 0 120 rotateOpoint3d} solidtransform } def
30 % fin liaison simple S-O
32 /LiaisonD1 {Liaison {-0.75 0 0 translatepoint3d} solidtransform} def
33 /LiaisonD2 {Liaison {0.75 0 0 translatepoint3d} solidtransform} def
34 /LiaisonDD { LiaisonD1 LiaisonD2 solidfuz} def
35 /LiaisonDOx {LiaisonDD Ox solidfuz} def
36 /LiaisonDOx1 {LiaisonDOx {0 -109.5 0 rotateOpoint3d} solidtransform } def
37 /LiaisonDOx2 {LiaisonDOx1 {0 0 -120 rotateOpoint3d} solidtransform } def
38 /LO12 { LiaisonDOx1 LiaisonDOx2 solidfuz} def
39 /LO123 {LO12 LOx1 solidfuz} def
41 /L4 { 0 0.5 20.10 [16 10] newcylindre
42 dup (Yellow) outputcolors
44 /S1L4{ Soufre1 L4 solidfuz} def
45 /S1S2L4{ S1L4 Soufre2 solidfuz} def
46 /S2O3 { S1S2L4 LO123 solidfuz} def
48 \axesIIID(0,0,0)(25,20,25)}
49 \psPoint(0,0,20.1){S2}
50 \psPoint(-14.14,0,-5){O1}
51 \psPoint(7.07,-12.24,-5 ){O2}
52 \psPoint(7.07,12.24,-5 ){O3}
53 \pcline[linestyle=dotted]{<->}(O2)(O)
55 \pcline[linestyle=dotted]{<->}(O)(S2)
56 \aput{:U}{\small 20,1 pm}
57 \pcline[linestyle=dotted]{<->}(O2)(O3)
58 \lput*{:U}{\small 24,5 pm}
59 \pcline[linestyle=dotted]{<->}(O2)(S2)
60 \lput*{:U}{\small 28,8 pm}
61 \pstMarkAngle[arrows=<->,MarkAngleRadius=0.8,linestyle=dotted]{O2}{O}{O3}{\footnotesize 109,4$^{\mathrm{o}}$}
62 \pstMarkAngle[arrows=<->,MarkAngleRadius=0.8,linestyle=dotted]{O1}{O}{S2}{\footnotesize 109,5$^{\mathrm{o}}$}
63 \rput(0,-2.5){$\mathrm{S_2^{\phantom{2}}O_3^{2-}}$}