... relative abun-dances of the ions, in Figure 2-1 .Me4SnMe3Sn+-MeMe2Sn-Me -Me-MeSn100% 22% 12%25%MeSn+-Me -MeMe,-MeMeBu4Sn Bu3Sn+BuSn+SnHSn+-Bu -2 Bu-C4H8SnH3+Bu2SnH+-C4H8BuSnH2+ - C4H8-C4H871%100% ... 1,3-dichloro-1,1,3,3,-tetramethylMe3SnCH=CHCH=CHSnMe3 stannane, 1,3-butadiene-1,4-diylbis[trimethylcyclo-BrPhSn(CH2)6SnBrPh(CH2)6 -, 1,8-distannacyclotetradecane, 1,8-dibromo-1,8-di-phenyl.If ... α-position, the alternative of intramolecular coordination can occur leading to the formation of monomers with 5-, 6-, 7-, or 8-coordinated tin. Some examples are shown in formulae 1-7 – 1-1 0.CSSEt2NCSSNEt2SnPhSSCNEt2NSnMeSnNM...