101
|
Using Lewis acidity differences in chelating ligands to control molecular structure and supramolecular assembly of Cu(II) complexes. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.05.069] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
102
|
Chun J, Jung IG, Kim HJ, Park M, Lah MS, Son SU. Concomitant Formation of N-Heterocyclic Carbene−Copper Complexes within a Supramolecular Network in the Self-Assembly of Imidazolium Dicarboxylate with Metal Ions. Inorg Chem 2009; 48:6353-5. [DOI: 10.1021/ic900846s] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiseul Chun
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon 440-746, Korea
| | - Il Gu Jung
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon 440-746, Korea
| | - Hae Jin Kim
- Korea Basic Science Institute, Daejeon 350-333, Korea
| | - Mira Park
- Department of Chemistry and Applied Chemistry, College of Science Technology, Hanyang University, Ansan 426-791, Korea
| | - Myoung Soo Lah
- Department of Chemistry and Applied Chemistry, College of Science Technology, Hanyang University, Ansan 426-791, Korea
| | - Seung Uk Son
- Department of Chemistry and Energy Science, Sungkyunkwan University, Suwon 440-746, Korea
| |
Collapse
|
103
|
Zheng ZB, Wu RT, Li JK, Sun YF. Hydrothermal syntheses and structural characterization of four complexes with in situ formation of 1,2,3-triazole-4-carboxylate ligand. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.03.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
104
|
Li YW, Chen WL, Wang YH, Li YG, Wang EB. Entangled zinc–ditetrazolate frameworks involving in situ ligand synthesis and topological modulation by various secondary N-donor ligands. J SOLID STATE CHEM 2009. [DOI: 10.1016/j.jssc.2008.12.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
105
|
Li J, Chen YG, Zhang CJ, Kong QJ. Three-dimensional supramolecular networks constructed from Keggin anions and metal–organic complex with unpredicted oxidation of an N-heterocycle ligand. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2008.12.068] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
106
|
Kong XJ, Zhuang GL, Ren YP, Long LS, Huang RB, Zheng LS. In situ cyclodehydration of iminodiacetic acid into 2,5-diketopiperazine-1,4-diacetate in lanthanide-based coordination polymers. Dalton Trans 2009:1707-9. [PMID: 19240902 DOI: 10.1039/b819792j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Xiang-Jian Kong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | | | | | | | | | | |
Collapse
|
107
|
Ma LF, Wang LY, Hu JL, Wang YY, Batten SR, Wang JG. Dicarboxylate anion-dependent assembly of Ni(II) coordination polymers with 4,4′-dipyridyl sulfide. CrystEngComm 2009. [DOI: 10.1039/b815916e] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
108
|
Meng ZS, Yun L, Zhang WX, Hong CG, Herchel R, Ou YC, Leng JD, Peng MX, Lin ZJ, Tong ML. Reactivity of 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole, structures and magnetic properties of polynuclear and polymeric Mn(ii), Cu(ii) and Cd(ii) complexes. Dalton Trans 2009:10284-95. [DOI: 10.1039/b914702k] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
109
|
Zheng YZ, Zhang YB, Tong ML, Xue W, Chen XM. Syntheses, structures and magnetic properties of a family of metal carboxylate polymers viain situ metal–ligand reactions of benzene-1,2,3-tricarboxylic acid. Dalton Trans 2009:1396-406. [PMID: 19462661 DOI: 10.1039/b815843f] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Yan-Zhen Zheng
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | | | | | | | | |
Collapse
|
110
|
Yang J, Ma JF, Liu YY, Batten SR. Four-, and six-connected entangled frameworks based on flexible bis(imidazole) ligands and long dicarboxylate anions. CrystEngComm 2009. [DOI: 10.1039/b816356c] [Citation(s) in RCA: 162] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
111
|
Sun CY, Zheng XJ, Chen XB, Li LC, Jin LP. Assembly and upconversion luminescence of lanthanide–organic frameworks with mixed acid ligands. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.03.115] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
112
|
Li CJ, Li W, Meng ZS, Peng MX, Yang MM, Tong ML. Synthesis, Structure, and Photoluminescent Properties of Two New Microporous Eu(III) Coordination Polymers with 2,4,6-Pyridinetricarboxylate. Aust J Chem 2009. [DOI: 10.1071/ch09019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Two new three-dimensional (3D) microporous Eu(iii) coordination polymers, [Eu5(pyta)5(H2O)7]·3.5H2O (1) and [Eu2(ox)1.5(pyta)(H2O)4]·4.5H2O (2) (H3pyta = 2,4,6-pyridinetricarboxylic acid, ox2– = oxalate), have been synthesized under hydrothermal conditions. The oxalate ligand in 2, generated in situ from the cleavage and chemical rearrangement of the H3pyta ligand, is incorporated to construct two kinds of 1D hydrophilic channels in 2. Both 1 and 2 show the characteristic photoluminescent properties of Eu(iii) compounds. Desolvated 2 shows interesting solvent-dependent photoluminescent properties.
Collapse
|
113
|
Li LL, Liu LL, Ren ZG, Li HX, Zhang Y, Lang JP. Solvothermal assembly of a mixed-valence Cu(I,II) cyanide coordination polymer [Cu(II)Cu(I)2(µ-Br)2(µ-CN)2(bdmpp)]n by C–C bond cleavage of acetonitrile. CrystEngComm 2009. [DOI: 10.1039/b903972d] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
114
|
A novel triply bridged dinuclear four-coordinate copper(I) complex with sterically bulky bis(dicyclohexylphosphino)methane ligand. OPEN CHEM 2008. [DOI: 10.2478/s11532-008-0057-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractA novel triply bridged dinuclear copper(I) complex: Cu2(μ-paa)(μ-dcpm)2(BF4)2·2CH2Cl2 [ paa = pyridine-2-carbaldehyde azine (C12H10N4) and dcpm = bis(dicyclohexylphosphino)methane(C25H46P2) ] has been synthesized and structurally characterized. Crystallographic studies of the complex showed that two copper(I) ions were bridged by one paa ligand and two dcpm ligands. The paa ligand adopted the Z configuration at the partially double N-N bond and the two copper ions have distorted tetrahedral coordination geometry. Because of the steric effect of dcpm, the pyridine rings of the paa ligand are obviously not on the same plane (the dihedral angle is 43.610). The interaction between neighboring ligands results in a N-N bond length (1.374(7) Å) contraction. The UV-vis spectra of the complex exhibited intense high-energy absorptions at λmax
Collapse
|
115
|
Burkholder E, Heirtzler F, Orian L, Ouellette W, Zubieta J. Unusual hydrothermal synthesis of a heteroaromatic macrocyclic complex. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
116
|
A Cu(II)-catalyzed oxidative substitution of pyrazole C–H bonds afforded the first halogenated pyrazolecarboxylato-based copper(II) coordination complexes. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2008.05.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
117
|
Fan LL, Li CJ, Meng ZS, Tong ML. Metal-Mediated One-Step In Situ Oxidation of 2,9-Dimethyl-1,10-phenanthroline and Formation of Transition-Metal and Lanthanoid Complexes. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800499] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
118
|
Wang J, Lin ZJ, Ou YC, Shen Y, Herchel R, Tong ML. Coordination Chemistry of Conformation-Flexible 1,2,3,4,5,6-Cyclohexanehexacarboxylate: Trapping Various Conformations in Metal-Organic Frameworks. Chemistry 2008; 14:7218-35. [DOI: 10.1002/chem.200800430] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
119
|
Liu CM, Zhang DQ, Zhu DB. In situ hydrothermal decarboxylation for unprecedented three-dimensional lanthanide–organic frameworks. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2008.05.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
120
|
Meng J, Wang X, Wang E, Li Y, Qin C, Xu X. An unprecedented (3,4)-connected self-penetrating network of zinc complex: In situ formation of a tetradentate N-heterocyclic ligand under POMs-mediated hydrothermal conditions. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2007.12.030] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
121
|
Sun CY, Li XX, Wang SF, Li WJ, Zheng XJ. Supramolecular Assembly of Double-Stranded Chains, Helical Chains and Catenane-like Layers with Flexible Ligands. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200700577] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
122
|
Hao HQ, Wang J, Liu WT, Tong ML. Two 3D hybrid networks of mog and bcu topology constructed with copper(I/I,II) halides and N,N′-spacers. CrystEngComm 2008. [DOI: 10.1039/b803728k] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
123
|
Shi WJ, Ruan CX, Li Z, Li M, Li D. Tuning framework formation by flexible ligand elongation and second ligating spacer variation: increasing dimensionality and macrocycle size. CrystEngComm 2008. [DOI: 10.1039/b718852h] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
124
|
Che GB, Liu CB, Liu B, Wang QW, Xu ZL. Syntheses, structures and photoluminescence of a series of metal-organic complexes with 1,3,5-benzenetricarboxylate and pyrazino[2,3-f][1,10]-phenanthroline ligands. CrystEngComm 2008. [DOI: 10.1039/b712015j] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
125
|
Zhang JY, Yue Q, Jia QX, Cheng AL, Gao EQ. Syntheses, structures and luminescence properties of cadmium(II) coordination polymers with in situ formed oxalate and bis(chelating) bridging ligands. CrystEngComm 2008. [DOI: 10.1039/b807165a] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
126
|
Zhang JY, Ma Y, Cheng AL, Yue Q, Sun Q, Gao EQ. A manganese(ii) coordination polymer with mixed pyrimidine-2-carboxylate and oxalate bridges: synthesis, structure, and magnetism. Dalton Trans 2008:2061-6. [DOI: 10.1039/b717837a] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
127
|
Liu YY, Ma JF, Yang J, Ma JC, Su ZM. Versatile frameworks constructed from divalent metals and 1,2,3,4-butanetetracarboxylate anion: syntheses, crystal structures, luminescence and magnetic properties. CrystEngComm 2008. [DOI: 10.1039/b716476a] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
128
|
Xiao HP, Liu BL, Liang XQ, Zuo JL, You XZ. Synthesis and crystal structures of manganese(II) complexes with the ligands from in situ oxidation of 2-mercaptonanicotinic acid. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2007.10.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
129
|
Zheng LL, Li HX, Leng JD, Wang J, Tong ML. Two Photoluminescent Metal–Organic Frameworks Constructed from Cd3(μ3-OH) Cluster or 1D Zn5(μ3-OH)2(μ-OH)2 Chain Units and In Situ Formed Bis(tetrazole)amine Ligands. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200701083] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
130
|
Li M, Li Z, Li D. Unprecedented cationic copper(i)–iodide aggregates trapped in “click” formation of anionic-tetrazolate-based coordination polymers. Chem Commun (Camb) 2008:3390-2. [DOI: 10.1039/b803636e] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
131
|
Gao XM, Li DS, Wang JJ, Fu F, Wu YP, Hu HM, Wang JW. A novel 1D armed-polyrotaxane chain constructed from a V-shaped tetracarboxylate ligand. CrystEngComm 2008. [DOI: 10.1039/b717415b] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
132
|
Sivaprakasam M, Couty F, David O, Marrot J, Sridhar R, Srinivas B, Rama Rao K. A Straightforward Synthesis of Enantiopure Bicyclic Azetidines. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700616] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
133
|
He YK, Han ZB, Ma Y, Zhang XD. Syntheses, crystal structures and luminescence properties of lanthanide coordination polymers involving in situ C–S bond cleavage of (4-pyridylthio)acetic acid. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2007.04.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
134
|
Wang XW, Zheng YQ. A dinuclear copper(II) complex and a zigzag chain iron(II) polymer based on the 4-antipyrine derived Schiff base ligands: The hydroxylation and redox occurred under the solvothermal conditions. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2007.03.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
135
|
Thébault F, Barnett SA, Blake AJ, Wilson C, Champness NR, Schröder M. Control of copper(I) iodide architectures by ligand design: angular versus linear bridging ligands. Inorg Chem 2007; 45:6179-87. [PMID: 16878926 DOI: 10.1021/ic052130k] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A family of coordination polymers formed by the reaction of copper(I) iodide with a range of angular bidentate or tridentate N-donor ligands is reported. The framework polymers [CuI(dpt)](infinity) 1 [dpt = 2,4-bis(4-pyridyl)-1,3,5-triazine], [CuI(dpb)](infinity) 2 [dpb = 1,4-bis-(4-pyridyl)-benzene], [(CuI)3(dpypy)2](infinity) 3, [CuI(dpypy)](infinity) 4 [dpypy = 3,5-bis(4-pyridyl)-pyridine], and [Cu3I3(pypm)](infinity) 5 [pypm = 5-(4-pyridyl)pyrimidine] have been prepared and structurally characterized. It was found that the angular nature of the dpypy and dpt ligands favors the formation of discrete (CuI)2 dimeric subunits as observed in [CuI(dpt).MeCN](infinity) 1 and [(CuI)3(dpypy)2](infinity) 3. In contrast, reaction with the linear ligand dpb affords [CuI(dpb)](infinity) 2 which incorporates a one-dimensional (CuI)(infinity) chain structure. Moreover, the additional donor available on the central ring of the dpypy ligand generates a novel two-dimensional bilayer structure in 3, in contrast to the one-dimensional ribbon structure observed in the case of 1. Interestingly, the bilayer structure of 3 additionally exhibits 2-fold interpenetration. The reaction of CuI with dpypy produces not only 3 but a further product [CuI(dpypy)](infinity) 4 that has been characterized as a one-dimensional chain constructed from trigonal-planar Cu(I) centers bridged by bidentate dpypy ligands. Compound 5, [Cu3I3(pypm)](infinity), exhibits a highly unusual three-dimensional structure in which the pypm ligand bridges two-dimensional brick-wall (CuI)(infinity) sheets.
Collapse
Affiliation(s)
- Frédéric Thébault
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | | | | | | | | | | |
Collapse
|
136
|
Fu WF, Gan X, Jiao J, Chen Y, Yuan M, Chi SM, Yu MM, Xiong SX. Synthesis, structural and spectroscopic characterization of mono- and binuclear copper(I) complexes with substituted diimine and phosphine ligands. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2007.02.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
137
|
Couty F, David O, Larmanjat B, Marrot J. Strained azetidinium ylides: new reagents for cyclopropanation. J Org Chem 2007; 72:1058-61. [PMID: 17253837 DOI: 10.1021/jo062221e] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Azetidinium ylides showed a remarkable ability to perform the cyclopropanation of Michael acceptors. Ephedrine-derived azetidinium ylides allowed the formation of substituted cyclopropanes in good yields and at a high level of stereoselectivity. The determination of the relative stereochemistries in the produced cyclopropanes gave some insight into the reaction mechanism.
Collapse
Affiliation(s)
- François Couty
- Institut Lavoisier, Université de Versailles Saint-Quentin-en-Yvelines, 45 avenue des Etats-Unis, 78035 Versailles Cedex, France
| | | | | | | |
Collapse
|
138
|
Zhang T, Ji C, Wang K, Hu D, Meng X, Chen C. One-dimensional coordination polymer and its hydrogen bonded 2D network generated from dimeric Ag(I) building units. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2006.08.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
139
|
Wang FQ, Zheng XJ, Wan YH, Sun CY, Wang ZM, Wang KZ, Jin LP. Novel 3D LnIII−CuI Supramolecular Architecture Based on 2D MOFs with (6,3) Topology. Inorg Chem 2007; 46:2956-8. [PMID: 17355129 DOI: 10.1021/ic062236v] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three novel coordination polymers, [LnCu(PZDC)3].[Ln(H2O)9]0.5.[(H2O)7H+]0.5 [Ln = La (1), Eu (2), Gd (3)], were synthesized. They are the first 3d-4f heterometallic framework with supramolecular 1D channels, in which lanthanide hydrate cations and lattice water molecules are located.
Collapse
Affiliation(s)
- Feng-Qin Wang
- Department of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
140
|
Robiette R. Mechanism and diastereoselectivity of aziridine formation from sulfur ylides and imines: a computational study. J Org Chem 2007; 71:2726-34. [PMID: 16555826 DOI: 10.1021/jo052559t] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A computational investigation of the title reaction involving semistabilized (R = Ph) and stabilized (R = CO2Me) sulfur ylides has been performed using DFT methods including a continuum model of solvent. Our results provide support for the generally accepted mechanism and are in very good agreement with observed cis/trans selectivities. This study shows that betaine formation is nonreversible, and that selectivity is thereby determined at the initial addition step, in the case of semistabilized ylides. Our analysis indicates moreover that addition TS structures are governed by the steric strain induced by the N-sulfonyl group, which favors the transoid approach in the case of syn betaine formation and the cisoid mode of addition in anti TSs. The observed low trans selectivity is accounted for by the favorable Coulombic interactions and stabilization by C-H...O hydrogen bonding allowed in the cisoid anti addition TS. In the case of stabilized ylides, the endothermicity of betaine formation combined with the high barrier to ring closure render the elimination step rate- and selectivity-determining. Accordingly, the low cis selectivity observed in stabilized ylide reactions is explained by the lower steric strain in the elimination step generated by the formation of the cis aziridine (as compared to the trans case).
Collapse
Affiliation(s)
- Raphaël Robiette
- Unité de Chimie organique et médicinale, Université catholique de Louvain, Place Louis Pasteur 1, B-1348 Louvain-la-Neuve, Belgium.
| |
Collapse
|
141
|
Han Z, He Y, Ge C, Ribas J, Xu L. Hydrothermal syntheses, crystal structures and magnetic properties of two copper(ii) complexes involved in situ ligand synthesis. Dalton Trans 2007:3020-4. [PMID: 17622419 DOI: 10.1039/b704327a] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydrothermal reaction of Cu(NO(3))(2), isophthalate (ip) and 2,2'-bipyridine (2,2'-bpy) without or with K(2)Cr(2)O(7) affords different complexes, whose structures are controlled only by the addition of the K(2)Cr(2)O(7). The reaction of Cu(NO(3))(2), isophthalate and 2,2'-bipyridine yields a novel one-dimensional double-chain coordination polymer [Cu(3)(ip)(2)(Hipa)(2)(bpy)(2)](n) (1). However, with the addition of K(2)Cr(2)O(7) in the above reaction at the same hydrothermal conditions, a discrete hexanuclear Cu(II) complex [Cu(6)(ipO)(4)(2,2'-bpy)(2)(H(2)O)(2)].6H(2)O (2) (ipOH = 2-hydroxyisophthalate) was isolated. It is interesting to find that the in situ reaction of isophthalate (ip) oxidized to 2-hydroxyisophthalate (ipOH) occurs. K(2)Cr(2)O(7) acts as an oxidant. The magnetic properties of 1 and 2 have been investigated by variable-temperature magnetic susceptibility and magnetization measurements, and the results reveal that intramolecular ferromagnetic interactions exist with weak intermolecular antiferromagnetic interactions at very low temperature in 1 and weak antiferromagnetic interactions admixture with strong ferromagnetic interactions in 2.
Collapse
Affiliation(s)
- Zhengbo Han
- College of Chemistry, Liaoning University, Shenyang, 110036, P. R. China.
| | | | | | | | | |
Collapse
|
142
|
Zheng YZ, Tong ML, Chen XM. Syntheses, structures and magnetic properties of five coordination polymers derived via in situ metal–ligand reactions of 2-phenyl-malonic acid. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2006.02.032] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
143
|
Chen JC, Zhou AJ, Hu S, Tong ML, Tong YX. Synthesis, structure and magnetic property of a new mixed-valence copper(I/II) complex derived from 3,5-bis(pyridin-2-yl)-1,2,4-triazole. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2006.01.052] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
144
|
Moorthy JN, Natarajan R, Savitha G, Suchopar A, Richards RM. Anion-driven self-assembly of tetrapyridyl ligand with a twist. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2006.03.066] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
145
|
Li CJ, Hu S, Li W, Lam CK, Zheng YZ, Tong ML. Rational Design and Control of the Dimensions of Channels in Three-Dimensional, Porous Metal-Organic Frameworks Constructed with Predesigned Hexagonal Layers and Pillars. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200501121] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
146
|
Robiette R, Richardson J, Aggarwal VK, Harvey JN. Reactivity and Selectivity in the Wittig Reaction: A Computational Study. J Am Chem Soc 2006; 128:2394-409. [PMID: 16478195 DOI: 10.1021/ja056650q] [Citation(s) in RCA: 130] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The salt-free Wittig reaction of non-, semi-, and stabilized ylides has been investigated on realistic systems using density functional theory (DFT) calculations, including continuum solvation. Our results provide unequivocal support for the generally accepted mechanism and are in very good agreement with experimental selectivities. This study shows that E/Z selectivity of non- and semi-stabilized ylides cannot be fully understood without considering the energy of the elimination TS. The influence of ylide stabilization and the nature of phosphorus substituents on reversibility of oxaphosphetane formation is clarified. Unexpectedly, the puckering ability of addition TSs is shown not to depend on ylide stabilization, but the geometry of the TS is decided by an interplay of 1,2; 1,3; and C-H...O interactions in the case of non- and semi-stabilized ylides, whereas a dipole-dipole interaction governs the addition TS structures for stabilized ylides. The well-known influence of ylide stabilization on selectivity of PPh(3) derivatives is explained as follows: in non- and semi-stabilized ylides reactions, cis and trans addition TSs have, respectively, puckered and planar geometries, and selectivity is governed by an interplay of 1,2 and 1,3 interactions. For stabilized ylides, the high E selectivity is due to a strong dipole-dipole interaction at the addition TS. The influence of the nature of phosphorus substituents on selectivity is also detailed, the different behavior of (MeO)(3)PCHCO(2)Me ylides being explained by their lower dipole. This novel picture of the factors determining TS structures and selectivity provides a sound basis for the design of new ylides.
Collapse
Affiliation(s)
- Raphaël Robiette
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | | | | | | |
Collapse
|
147
|
Synthesis, Crystal Structures, and Magnetic Properties of Three New Iron Complexes Derived from 3,5-Bis(pyridin-2-yl)-1,2,4-triazole. Z Anorg Allg Chem 2006. [DOI: 10.1002/zaac.200500397] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
148
|
Aggarwal VK, Charmant JPH, Fuentes D, Harvey JN, Hynd G, Ohara D, Picoul W, Robiette R, Smith C, Vasse JL, Winn CL. Highly Enantioselective Synthesis of Glycidic Amides Using Camphor-Derived Sulfonium Salts. Mechanism and Applications in Synthesis. J Am Chem Soc 2006; 128:2105-14. [PMID: 16464113 DOI: 10.1021/ja0568345] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reactions of a range of amide-stabilized sulfur ylides derived from readily available camphor-derived sulfonium salts for the synthesis of glycidic amides have been studied. Primary, secondary, and tertiary amides were tested, and it was found that the highest enantioselectivities were observed with tertiary amides, which provided glycidic amides in good to excellent yields, exclusive trans selectivity, and excellent enantioselectivities. The reaction was general for aromatic aldehydes, but aliphatic aldehydes gave more variable enantioselectivities. The epoxy amides could be converted cleanly into epoxy ketones by treatment with organolithium reagents. We were also able to effect selective ring opening of the epoxy amides with a variety of nucleophiles, followed by hydrolysis of the amide to yield the corresponding carboxylic acid. This methodology was applied to the total synthesis of the target compound SK&F 104353. A combination of crossover experiments and theoretical calculations has revealed that the rate- and selectivity-determining step is ring closure, not betaine formation as was the case for phenyl-stabilized ylides.
Collapse
Affiliation(s)
- Varinder K Aggarwal
- School of Chemistry and Structural Chemistry Laboratory, School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
149
|
Li X, Cao R, Guo Z, Lü J. Hydroxyl-directed dinitration of carboxylate ligands mediated by lead and nickel nitrates and preparation of Pb/Ni heterometallic complexes under hydrothermal conditions. Chem Commun (Camb) 2006:1938-40. [PMID: 16767242 DOI: 10.1039/b600684a] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydrothermal reaction of 5-hydroxyisophthalic acid (H3L) and lead and nickel nitrates produced a heterometallic polymer [Pb6Ni(mu3-OH)8(La)2]n containing heptanuclear [Pb6Ni(mu3-OH)8]6+ units and a homometallic complex {[Pb(Lb)(H2O)].(H2O)0.25}n consisting of one-dimensional lead-oxide chains: evidently, the La and Lb ligands resulted from in situ hydroxyl-directed dinitration of L ligand during the hydrothermal reaction.
Collapse
Affiliation(s)
- Xiaoju Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Fujian, Fuzhou, 350002, P. R. China
| | | | | | | |
Collapse
|