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• W1973774908 abstract "Some compounds having very bulky ligands, mainly (Me 3 Si) 3 C (denoted by Tsi) or (PhMe 2 Si) 3 C (denoted by Tpsi), attached to functional tin centres have been studied. Treatment of TsiSnR 2 Cl, R=Me or Ph, with one equivalent of ICl gave the corresponding chloride TsiSnRCl 2 , and use of an excess of ICl gave TsiSnCl 3 in both cases. Reaction of either chloride with one equivalent of Br 2 gave the dibromide TsiSnRBr 2 ; when an excess of Br 2 was used TsiSnMe 2 Cl still gave the dibromide but TsiSiPh 2 Cl gave the tribromide TsiSnBr 3 . Reaction of TsiSnMe 2 Br with AgSCN or Ag 2 O gave TsiSnMe 2 NCS and (TsiSnMe 2 ) 2 O, respectively, but when the crude product from the reaction of TsiSnMeBr 2 with AgNO 3 was recrystallized from MeOH the nitrato–oxide {TsiMe(O 2 NO)Sn} 2 O was obtained. In a seemingly previously unreported type of reaction, the alkoxide TsiSnMe 2 OEt reacted with ICl, Br 2 , or I 2 to give TsiSnMe 2 X, X=Cl, Br, or I, respectively, and Bu 3 SnOEt likewise reacted with ICl to give Bu 3 SnCl. The chlorides TsiSnMe 2 Cl and TsiSnMeCl 2 gave the hydrides TsiSnMe 2 H and TsiSnMeH 2 on treatment with LiAlH 4 , but in the case of TpsiSnMe 2 Cl the TpsiSn bond was cleaved to give TpsiH. The compound (Me 3 Si) 2 C(SnMe 2 Ph)(SiMe 2 Cl) reacted with a 1 M proportion of AgBF 4 in CH 2 Cl 2 with cleavage of the SnPh bond to give the difluoride (Me 3 Si) 2 C(SnMe 2 F)(SiMe 2 F). The crystal structures of the monomeric compounds {TsiMe(O 2 NO)Sn} 2 O, TpsiSnMeCl 2 and TpsiSnCl 3 are reported; {TsiMe(O 2 NO)Sn} 2 O provides the first example of unidentate bonding of an NO 3 group to four-coordinate tin." @default.
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• W1973774908 title "Organotin compounds containing a bulky (Me3Si)3C or related ligand. Crystal structures of {(Me3Si)3CMe(O2NO)Sn}2O, (PhMe2Si)3CSnMeCl2 and (PhMe2Si)3CSnCl3" @default.
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• W1973774908 doi "https://doi.org/10.1016/s0022-328x(98)00688-3" @default.
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