无机化学学报
無機化學學報
무궤화학학보
JOURNAL OF INORGANIC CHEMISTRY
2011年
10期
2027-2032
,共6页
2-(5-甲基-1,3,4-噻二唑)-硫乙酸%稀土%晶体结构%π-π相互作用%氢键
2-(5-甲基-1,3,4-噻二唑)-硫乙痠%稀土%晶體結構%π-π相互作用%氫鍵
2-(5-갑기-1,3,4-새이서)-류을산%희토%정체결구%π-π상호작용%경건
2-(5-methy1-1,3,4-thiadiazo1-2-ylthio)acetie acid%rare earth%crystal structure%π-π interaction%hydrogen bonds
由溶液法合成了2个稀土配合物{[Ln(Hmtyaa)3(H2O)2]· H2O}n(Ln=Nd,1;Pr,2)(Hmtyaa=2-(5-甲基-1,3,4-噻二唑)-硫乙酸),用X-射线单晶衍射仪测定了配合物的单晶结构,并对其进行了元素分析、红外光谱、热重和粉末X-射线衍射等表征.晶体结构表明:配合物1和2结构相同,都属于三斜晶系,P(-1)空间群.配合物中金属离子均采取“配位模式,金属离子被配体桥连形成一维双链结构,该一维双链被氢键和π-π作用连接成二维层状结构.
由溶液法閤成瞭2箇稀土配閤物{[Ln(Hmtyaa)3(H2O)2]· H2O}n(Ln=Nd,1;Pr,2)(Hmtyaa=2-(5-甲基-1,3,4-噻二唑)-硫乙痠),用X-射線單晶衍射儀測定瞭配閤物的單晶結構,併對其進行瞭元素分析、紅外光譜、熱重和粉末X-射線衍射等錶徵.晶體結構錶明:配閤物1和2結構相同,都屬于三斜晶繫,P(-1)空間群.配閤物中金屬離子均採取“配位模式,金屬離子被配體橋連形成一維雙鏈結構,該一維雙鏈被氫鍵和π-π作用連接成二維層狀結構.
유용액법합성료2개희토배합물{[Ln(Hmtyaa)3(H2O)2]· H2O}n(Ln=Nd,1;Pr,2)(Hmtyaa=2-(5-갑기-1,3,4-새이서)-류을산),용X-사선단정연사의측정료배합물적단정결구,병대기진행료원소분석、홍외광보、열중화분말X-사선연사등표정.정체결구표명:배합물1화2결구상동,도속우삼사정계,P(-1)공간군.배합물중금속리자균채취“배위모식,금속리자피배체교련형성일유쌍련결구,해일유쌍련피경건화π-π작용련접성이유층상결구.
Two coordination compounds {[Ln(Hmtyaa)3(H2O)2]·H2O}n (Ln=Nd,1; Pr,2) (Hmtyaa is 2-(5-methyl-1,3,4-thiadiazo1-2-ylthio)acetic acid) have been synthesized and they were structurally characterized by singlecrystal X-ray diffraction,and then were characterized by elemental analysis,F TIR spectra,thermal analysis and powder X-ray diffraction.Both compounds are isostructural and crystallize in the triclinic system,space group P(-1).Single crystal X-ray diffraction analysis indicate that each asymmetric unit contains one metal ion and one noncoordinated water molecules and each Ln(Ⅲ) (Ln=Nd,Pr) ion adopts nine-coordinated mode in both compounds.Metal centers are bridged together by carboxylate oxygen atoms to result in a double chain structure.Weak faceto-face π-π interactions between the neighbouring parallel thiadiazole rings of the ligand link the compounds into 2D layer structures.CCDC:653458,1; 653459,2.
