北京大学学报(自然科学版)
北京大學學報(自然科學版)
북경대학학보(자연과학판)
ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS PEKINENSIS
2001年
2期
261-264
,共4页
寇会忠%高松%孙柏旺%马宝清
寇會忠%高鬆%孫柏旺%馬寶清
구회충%고송%손백왕%마보청
晶体结构%钕(Ⅲ)配合物%六氰合铬(Ⅲ)配合物%氰桥%链状配合物
晶體結構%釹(Ⅲ)配閤物%六氰閤鉻(Ⅲ)配閤物%氰橋%鏈狀配閤物
정체결구%녀(Ⅲ)배합물%륙청합락(Ⅲ)배합물%청교%련상배합물
报道了一个氰根桥连的4f-3d一维链状配合物[Nd(DMF)4(H2O)2Cr(CN)6].H2O。它是由NdBr3.6H2O,H2salen和(Bu4N)3[Cr(CN)6](摩尔比为1∶1∶1)在甲醇-DMF混合溶剂中自组装得到。由X-射线单晶衍射结构分析得知其属于单斜晶系,空间群为P21/c,晶体数据a=13.200(3),b=12.996(3),c=19.211(4)?,β=109.93(3)°,V=3098.4(11)?3,Z=4,S=1.012,R1=0.0386,wR=0.0751。在配合物中,每个Nd离子以顺式方式连接2个Cr离子,而每个Cr离子同样以顺式方式连接2个Nd离子,得到一个新颖的类长城链状结构。配位和晶格水分子通过氢键将相邻的NdCr一维链连成三维网状结构。
報道瞭一箇氰根橋連的4f-3d一維鏈狀配閤物[Nd(DMF)4(H2O)2Cr(CN)6].H2O。它是由NdBr3.6H2O,H2salen和(Bu4N)3[Cr(CN)6](摩爾比為1∶1∶1)在甲醇-DMF混閤溶劑中自組裝得到。由X-射線單晶衍射結構分析得知其屬于單斜晶繫,空間群為P21/c,晶體數據a=13.200(3),b=12.996(3),c=19.211(4)?,β=109.93(3)°,V=3098.4(11)?3,Z=4,S=1.012,R1=0.0386,wR=0.0751。在配閤物中,每箇Nd離子以順式方式連接2箇Cr離子,而每箇Cr離子同樣以順式方式連接2箇Nd離子,得到一箇新穎的類長城鏈狀結構。配位和晶格水分子通過氫鍵將相鄰的NdCr一維鏈連成三維網狀結構。
보도료일개청근교련적4f-3d일유련상배합물[Nd(DMF)4(H2O)2Cr(CN)6].H2O。타시유NdBr3.6H2O,H2salen화(Bu4N)3[Cr(CN)6](마이비위1∶1∶1)재갑순-DMF혼합용제중자조장득도。유X-사선단정연사결구분석득지기속우단사정계,공간군위P21/c,정체수거a=13.200(3),b=12.996(3),c=19.211(4)?,β=109.93(3)°,V=3098.4(11)?3,Z=4,S=1.012,R1=0.0386,wR=0.0751。재배합물중,매개Nd리자이순식방식련접2개Cr리자,이매개Cr리자동양이순식방식련접2개Nd리자,득도일개신영적류장성련상결구。배위화정격수분자통과경건장상린적NdCr일유련련성삼유망상결구。
A bimetallic complex {[Nd(DMF)4(H2O)2Cr(CN)6].Nh2o}n is reported.It was synthesized as yellow crystals by self-assembly of NdBr3·6H2O,H2 salen and (Bu4N)3[Cr(CN)6] (molar ratio of 1∶1∶1) in methanol-DMF mixed solution.Single-crystal X-ray diffraction analysis shows that it consists of a cyano-bridged chain structure.The Nd atom is eight-coordinate with a distorted square antiprism geometry.Each Cr(CN)6 coordinates to two Nd(Ⅲ) ions using two cis cyanide ligands,while each Nd(DMF)4(H2O)2 group connects two Cr(CN)6 moieties in a cis fashion,giving rise to an unprecedented chain structure.Crystal data:monoclinic,space group P21/c,a=13.200(3),b=12.996(3),c=19.211(4)?,β=109.93(3)°,V=3098.4(11)?3,Z=4,S=1.012,R1=0.0386,Wr=0.0751.