A New Two-dimensional Cd(Ⅱ) Complex Assembled by 1,3,5-Benzenetricarboxylic Acid and 3-(2-Pyridyl)pyrazole

A new 2D coordination polymer, {[Cd_5(BTC)_2(L)_4(H_2O)_2]_n·2H_2O}_n(1, H_3BTC = 1,3,5-benzenetricarboxylic acid, HL = 3-(2-pyridyl)pyrazole) was synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction, powder XRD, IR, TGA, fluorescence spectrum and elemental analysis techniques. Complex 1 belongs to the monoclinic system, P2_(1/c) space group, with a = 8.8732(4), b = 17.5179(7), c = 17.8123(7) ?, β = 103.1830(10)°, V = 2695.77(19) ?~3 and Z = 2. It features a 2D network constructed by BTC and L ligand. In addition, we analyzed Natural Bond Orbital(NBO) by using the PBE0/LANL2DZ method built in Gaussian 09 Program. The calculation results indicated obvious covalent interactions between the coordinated atoms and Cd(Ⅱ) ion.     

Two New Zn(Ⅱ) and Co(Ⅱ) Coordination Polymers Constructed by 4-Bromobenzoic Acid and 1,4-Bis(imidazol-1-yl)-butane: Synthesis,Crystal Structure and Theoretical Calculations

Two new coordination polymers, [Zn(bba)_2(bib)]_(2n)(1) and [Co_(0.5)(bba)(bib)_(0.5)]_(2n)(2)(Hbba = 4-bromobenzoic acid, bib = 1,4-bis(imidazol-1-yl)-butane), have been hydrothermally designed and synthesized, and their structures were determined by elemental analyses, IR spectroscopy, TG, fluorescence spectroscopy, X-ray single-crystal and powder diffraction. Complexes 1 and 2 both belong to the monoclinic system and exhibit one-dimensional zigzag chain-like structure. In addition, we analyzed Natural Bond Orbital(NBO) in using the PBE0/LANL2 DZ method built in Gaussian 03 Program. The calculation results indicated the obvious covalent interaction between the coordinated atoms and Zn(Ⅱ), Co(Ⅱ) ions.     

NAB和NYAB晶体的斯塔克能级

在液氮温度下测量ＮＡＢ和ＮＹＡＢ的全波段吸收光谱，并由此初步指认了ＮＡＢ和ＮＹＡＢ的斯塔克能级，利用Ｊ－Ｒ理论首次对ＮＡＢ和ＮＹＡＢ的斯塔克能级进行了全谱项拟合计算，并作了正确的指认。     

A New One-dimensional Complex Assembled by 4-Nitrobenzoic Acid and Bis(imidazol) Ligands:Syntheses,Structures and Theoretical Calculations

A new Zn(Ⅱ)coordination polymer,[Zn(nba)_2(mbix)]_(2n)(1,Hnba=4-nitrobenzoic acid,mbix=1,3-bis(imidazol-1-ylmethyl)-benzene),was synthesized and characterized by elemental analyses,IR spectra,TG,fluorescence spectroscopy,single-crystal and powder X-ray diffractions.It belongs to the triclinic system,■ space group,with a=9.341(2),b=13.029(3),c=23.660(6)?,α=99.603(6)°,β=90.461(6)°,γ=90.597(5)°,V=2838.9(12)?~3 and Z=2.It shows one-dimensional chains which are further linked by C–H···O hydrogen bonds andπ-πstacking interactions to yield a three-dimensional supramolecular structure.In addition,the Natural Bond Orbital(NBO)was analyzed in using the PBE0/LANL2DZ method built in Gaussian 09 Program.The calculation results indicated obvious covalent interaction between the coordinated atoms and Zn(Ⅱ)ion.     

Hydrothermal Synthesis and Crystal Structure of a Cadmium（Ⅱ） Polymer with One-dimensional Chain Structure： [Cd（MDPPz）（BDC）（H2O）]n

A metal-organic coordination compound formulated as [Cd(MDPPz)(BDC)(H2O)]n 1 (MDPPz=11-methyldipyrido[3,2-a:2',3'-c]phenazine,BDC=1,4-benzenedicarboxylate) has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,fluorescence spectrum and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system,space group C2/c,with a=30.673(8),b=9.623(3),c=20.784(6) ,β=98.646(3)o,V=6065(3)3,C27H17CdN4O5,Mr=589.85,Dc=1.292 g/cm3,μ(MoKα)=0.757 mm-1,F(000)=2360,Z=8,the final R=0.0381 and wR=0.0855 for 4191 observed reflections (I>2σ(I)). 1 exhibits blue fluorescence property at room temperature.     

国外部分基础物理教材内容介绍

因教学工作需要，我们（北京大学物理学院陆果教授和本文作者）对国外部分基础物理教材进行了调查和分析，现将这些教材的内容、篇幅以及各部分内容所占的比例以表格的形式作一介绍，供各位物理教师参考．表中的数字（已说明的除外）是各相关内容所占的页数．（参考书信息见后面表格）     

两个镉/锌超分子配合物的合成、晶体结构及理论计算

通过水热法合成了2个新的金属-有机超分子配合物[Cd(cba)2(bix)]_2(1)和[Zn(cba)2(bix)]_2(2)(Hcba=2-氯苯甲酸,bix=1,4-双(咪唑基-1-基)苯),并对其进行了元素分析、红外光谱、热重、荧光光谱、单晶和粉末X射线衍射测定。配合物1和2同构,均为零维结构,并且通过π-π堆积形成了三维超分子结构。此外,还用高斯09程序PBE0/LANL2DZ方法对配合物1进行了自然键轨道(NBO)分析,计算结果表明配位原子与Cd(Ⅱ)离子之间存在着共价作用。     

两个基于双咪唑基配体的Co(Ⅱ)/Cu(Ⅰ)配合物的合成、晶体结构及荧光性质

以Co(ClO4)2·6H2O/Cu(ClO4)2·6H2O、1,4-双(咪唑基-1-基)丁烷(bib)/1,4-双(咪唑基-1-基)苯(bix)和4,4-(1,3-苯基双(亚甲基氧基))二苯甲酸(H2pmda)为原料,在水热条件下反应,得到了2个配合物{[Co(bib)3](ClO4)2}n(1)和{[Cu3(bix)(4.5)](ClO4)3}n(2)(H2pmda未参与反应),对它们进行了元素分析、红外光谱、荧光光谱、单晶和粉末X射线衍射表征。配合物1属于三方晶系,R 空间群,a=b=1.39337(5)nm,c=1.74054(13)nm,V=2.9265(3)nm^3,Mr=828.59,Dc=1.410g·cm^-3,F(000)=1293,μ=0.639mm^-1,Z=3,R1=0.0611,wR2=0.1937(I>(2σ(I))。配合物2也属于三方晶系,P 空间群,a=b=2.33441(15)nm,c=0.71511(9)nm,V=3.3749(5)nm^3,Mr=1561.28,Dc=1.536g·cm^-3,F(000)=1602,μ=1.131mm^-1,Z=2,R1=0.0439,wR2=0.1090(I>(2σ(I))。单晶结构分析表明配合物1为含有36元环的二维网状结构,配合物2为含有84元环的二维网状结构,并通过氢键或π-π堆积使它们扩展成超分子结构。此外,还研究了2个配合物的荧光性质。     

Two New Mn(Ⅱ)/Co(Ⅱ) Complexes Assembled by 2,5-Dihydroxy-1,4-benzenedicarboxylic Acid and Phenanthroline or Derivative

Two new complexes [Mn(DHTA)(PLQ)]n(1) and{[Co2(DHTA)(phen)2(H2 O)6]· DHTA}n(2)(H2 DHTA = 2,5-dihydroxy-1,4-benzenedicarboxylic acid, PLQ = 1,10-phenanthroline-5,6-quinone, phen = 1,10-phenanthroline) have been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, fluorescence spectrum, single-crystal and power X-ray diffraction. Complex 1 exhibits a two-dimensional(2 D) network, which was stabilized through O–H···O hydrogen bonding interactions. Complex 2 shows a zero-dimensional structure, which was further extended into a three-dimensional supramolecular structure through O–H···O hydrogen bonds and π-π interactions.     

基于琥珀酸配体的锌/镉配合物的合成、结构及性质

在水热条件下获得了2个过渡金属配合物[Zn(suc)(HL)]_n(1)和[Cd(suc)_0.5(L)]_n(2)(H₂suc=琥珀酸，HL=3-(2-吡啶基)吡唑)，并通过元素分析、IR光谱、单晶X射线衍射、热重分析、荧光光谱和粉末X射线衍射对结构进行了表征。在配合物1中，羧基配体suc^2-通过双齿和单齿模式桥联金属中心形成了二维网络结构。在2中，suc^2-和L-配体连接Cd(Ⅱ)离子也形成了二维框架。此外，通过基于Gaussian16程序的PBE0/LANL2DZ方法，对从1和2的晶体结构中选出的“分子碎片”进行了量子化学计算。计算结果表明，配位原子与Zn(Ⅱ)离子、Cd(Ⅱ)离子之间存在着明显的共价相互作用。