多唑烷金屬配合物的合成及反應(yīng)研究.pdf

1、南開大學(xué)碩士學(xué)位論文多唑烷金屬配合物的合成及反應(yīng)研究姓名：王志宏申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：有機(jī)化學(xué)指導(dǎo)教師：王積濤2000.5.1AbstractThisdissertationconceiTSthesynthesis，reactivityandthestructuresofbis(stannyl)methanederivativeswiththeligandsofpoly(pyrazolyl)alkanesorpoly(triazoly

2、l)alkanesandheteromulti—nuclearcomplexescontainingpoly(triazolyl)alkanesElevennovelbis(stannyl)methanederivativescontainingpoly(pyrazolyl)alkaneshavebeensynthesizedbythereactionof(PhBr2Sn)2CH2withpoly(pyrazolyl)alkanesor

3、poly(triazolyl)alkanesTheresultsindicatethesubstitutiongroupsonthepyrazoleringsaffectthecoordinatepropertiesoftheligandsaswellasthestabilityoftheproductsWhenbis(pyrazolyl)ethaneorbis(pyrazolyl)propanesisusedasligand，thep

4、roductsareeasilydecomposedbythevaporinairThemolecularstructuresofCH2(4一Clpz)2一Sn(PhBh)CH2SnPhBr2(1)and(CH93(3，5一Mezpz)2Sn(PhBr2)CH2SnPhBr2flI)weredeter—minedbytheX—raydiffractionmethod，indicatingthatdifferentcoordination

5、patternswereassumedinIandIIrespectivelyInI，onlyoneSnatomWasinvolvedinthecoordinationbetweenbis(stannyl)methaneandtheligand，inwhichtinissix—coordinatedwithaoctahedralgeometryThesix—memberedSnN_N—CN忒metallacycleassumesasli

6、ghtlydistortedboatformWhileinII，nodirectinteractionWasobservedbetweentheligandwiththemetalatomsowingtotheweakerdonorabilityoftheligand(CH2)3(3，5Me2pz)2Thetwotinatomswerebridgedbytwobromideanionswhichcomesfromthehydrolysi

7、softheproductbythevaporinairwhenthecrystalswereformingTheSnatomalsoassumesaslightlydistortedoctahedralgeometrywithtwobridgedBr—inc話positionAlltheproductshavetheinclinationoflosingtheligandwhentheyareattactedbystrongerdon

8、orsuchasDMSOanddppcEightheteromulti—nuclearcomplexescontainingpoly(triazoiyl)alkaneshavebeensynthesizedbythereactionofCH2(3，5Me2Tz)2M(CO)4(M=Mo，mandorganotininhighyieldsOwingtotheirstronginclinationofeffiorescency，thesin