Crystallographic report: [(1,3‐Bis(4‐pyridyl)propane)(diaqua)zinc(II)] diperchlorate dihydrate

Four ligands of 1,3‐bis(4‐pyridyl)propane and two water molecules are coordinated to the zinc(II) atom so that the coordination geometry closely resembles a trans‐N₄O₂ octahedral environment. Copyright © 2004 John Wiley & Sons, Ltd.     

Crystallographic report: Chloro[1,3‐bis[2‐[2‐[(4‐methoxybenzyl) amino]ethylamino]]‐2‐propanol]zinc(II) chloride hydrate, [(C23H36N4O3)ZnCl]Cl·H2O

The zinc(II) center in the molecule of [(C₂₃H₃₆N₄O₃)ZnCl]Cl·H₂O is coordinated by four nitrogen atoms of HL (1,3‐bis[2‐[2‐[(4‐methoxybenzyl) amino]ethylamino]]‐2‐propanol) and one chloro anion. The coordination moieties are connected by hydrogen bonds to form a one‐dimensional structure. Copyright © 2005 John Wiley & Sons, Ltd.     

Crystallographic report: Bis(tetraphenylphosphonium) bis(dichloro‐nitratophenylstannate)methane, [Ph4P+]2 [(PhCl2(NO3)Sn)2CH2]2−

Each tin atom of the title compound is five‐coordinate, defined by 2C, 2Cl and 1O atoms, and shows a distorted square pyramidal configuration stabilized by intramolecular Sn· · ·O or Sn· · ·Cl interactions. Both nitrate anions coordinate the tin atoms in a monodentate mode. Copyright © 2003 John Wiley & Sons, Ltd.     

A helical zinc(II) coordination polymer assembled from 1,3‐bis[(pyridin‐3‐yl)methoxy]benzene and benzene‐1,4‐dicarboxylic acid

In catena‐poly[[aqua[1,3‐bis(pyridine‐3‐ylmethoxy)benzene‐κN]zinc(II)]‐μ₂‐benzene‐1,4‐dicarboxylato‐κ²O¹:O⁴], [Zn(C₈H₄O₄)(C₁₈H₁₆N₂O₂)(H₂O)]_n, each Zn^II centre is tetrahedrally coordinated by two O atoms of bridging carboxylate groups from two benzene‐1,4‐dicarboxylate anions (denoted L²⁻), one O atom from a water molecule and one N atom from a 1,3‐bis[(pyridin‐3‐yl)methoxy]benzene ligand (denoted bpmb). (Aqua)O—H...N hydrogen‐bonding interactions induce the formation of one‐dimensional helical [Zn(L)(bpmb)(H₂O)]_n chains which are interlinked through (aqua)O—H...O hydrogen‐bonding interactions, producing two‐dimensional corrugated sheets.     

Crystallographic report: The two‐dimensional crystal structure of bis(trimethyltin)succinate, [(Me3Sn)2(O2CCH2CH2CO2)]∞

A two‐dimensional layer structure is found in the title compound comprising interconnected 22‐membered rings and trans‐C₃O₂ trigonal bipyramidal coordination geometries for tin. Copyright © 2003 John Wiley & Sons, Ltd.     

Crystallographic report: 1,4‐Bis[bis(trimethylsilyl)methyl‐dichlorostannylmethyldimethylsilyl]benzene,p‐{[(Me3Si)2CH]Sn(Cl)2CH2SiMe2}2C6H4

The dinuclear molecule of p‐{[(Me₃Si)₂CH]Sn(Cl)₂CH₂SiMe₂}₂C₆H₄ is centrosymmetric and adopts an ‘S’ conformation that is stabilized by intramolecular C? H···π interactions. The tin atom exists within a distorted tetrahedron defined by a C₂Cl₂ donor set. Copyright © 2002 John Wiley & Sons, Ltd.     

Crystallographic report: Bis[tris(2‐methyl‐2‐phenylpropyl)tin] piperazinyldithiocarbamate

The centrosymmetric structure of bis[tris(2‐methyl‐2‐phenylpropyl)tin]piperazinyldithiocarbamate contains four‐coordinated tin and monodentate dithiocarbamate ligands. Copyright © 2004 John Wiley & Sons, Ltd.     

Crystallographic report: 1,4‐Bis[(phenyldichlorostannyl)ethyl]benzene,p‐(Cl2PhSnCH2CH2)2C6H4

An ‘S’ conformation, stabilized by intramolecular C? H···π interactions, is found in centrosymmetric p‐(Cl₂PhSnCH₂CH₂)₂C₆H₄. The dinuclear species features distorted tetrahedral tin centres, with the greatest distortion manifested in the C? Sn? C angle of 134.32(16) °. Copyright © 2002 John Wiley & Sons, Ltd.     

Crystallographic report: Bis(acetato‐O,O′){4‐[N,N‐bis(2‐cyanoethyl)amino] pyridine}bis(methanol)cadmium(II), [Cd(C11H12N4) (CH3CO2)2(CH3OH)2]

The cadmium atom is coordinated in distorted pentagonal bipyramidal geometry by the pyridine‐nitrogen atom of the 4‐[N,N‐bis(2‐cyanoethyl)amino]pyridine ligand, two oxygen atoms of two methanol molecules and four oxygen atoms of two acetate groups. Copyright © 2005 John Wiley & Sons, Ltd.     

Three p‐xylene‐solvated pseudopolymorphs of bis[1,3‐bis(pentafluorophenyl)propane‐1,3‐dionato]copper(II)

The Cu²⁺ ions in the title compounds, namely bis[1,3‐bis(pentafluorophenyl)propane‐1,3‐dionato‐κ²O,O′]copper(II) p‐xylene n‐solvate, [Cu(C₁₅HF₁₀O₂)₂]·nC₈H₁₀, with n = 1, (I), n = 2, (II), and n = 4, (III), are coordinated by two 1,3‐bis(pentafluorophenyl)propane‐1,3‐dionate ligands. The coordination complexes of (I) and (II) have crystallographic inversion symmetry at the Cu atom and the p‐xylene molecule in (I) also lies across an inversion centre. The p‐xylene molecules in (I) and (II) interact with the pentafluorophenyl groups of the complex via arene–perfluoroarene interactions. In the crystal of (III), two of the p‐xylene molecules interact with the pentafluorophenyl groups via arene–perfluoroarene interactions. The other two p‐xylene molecules are located on the CuO₄ coordination plane, forming a uniform cavity produced by metal...π interactions.     

Crystallographic report: Bis{4‐[N,N‐bis(2‐cyanoethyl)amino]pyridine} dichlorozinc(II)

In (C₁₁H₁₂N₄)₂ZnCl₂, the zinc(II) center is coordinated by the pyridine nitrogen atoms of two 4‐[N,N‐bis(2‐cyanoethyl)amino]pyridine ligands and two chlorine atoms in a tetrahedral geometry. Copyright © 2004 John Wiley & Sons, Ltd.     

Crystallographic report: Diisopropylammonium [3‐(2‐thienyl)‐2‐sulfanylpropenoato]triphenylstannate

The title compound comprises trigonal bipyramidal SnPh₃(tspa) anions and ⁱPr₂NH₂ cations linked into centrosymmetric dimers by N? H·O hydrogen bonds. Copyright © 2004 John Wiley & Sons, Ltd.     

Crystallographic report: 2,4‐Diphenyl‐1,3‐bis(4,4,5,5‐tetramethyl[1,3,2] dioxaborolan‐2‐yl)‐buta‐1Z,3E‐diene

The compound comprises a 1Z,3E‐butadiene moiety substituted by two pinacol boronate functional groups. Copyright © 2005 John Wiley & Sons, Ltd.     

Crystallographic report: 6‐Mercaptopurinate complex of tribenzyltin(IV), (PhCH2)3Sn(C5H3N4S)Sn(PhCH2)3OMe

The title complex displays a binuclear structure in which the geometries of tin atoms are different: one is cis‐trigonal bipyramidal (with a C₃NS donor set) and the other is trans‐trigonal bipyramidal (C₃NO). Copyright © 2004 John Wiley & Sons, Ltd.     

Tl4Pd3Cl10 – eine Verbindung mit neuartiger [(PdCl2Cl2/2)4]4–‐Baugruppe

Tl₄Pd₃Cl₁₀ – A Compound with a New [(PdCl₂Cl_2/2)₄]^4– Group Single crystals of Tl₄Pd₃Cl₁₀ can be obtained by hydrothermal synthesis. They show tetragonal symmetry with lattice parameters a = 15.956(1) Å and c = 14.146(1) Å, Z = 8 and space group I42d (No. 122). The atomic arrangement of Tl₄Pd₃Cl₁₀ is explored by X‐ray crystal structure analysis. Tl₄Pd₃Cl₁₀ is the first example of a new structural type with a hitherto not isolated tetramer [(PdCl₂Cl_2/2)₄]^4– group.     

Synthesis and characterization of organosoluble copolyimides based on 2,2‐Bis[4‐(4‐aminophenoxy)phenyl]propane, 2,2‐Bis[4‐(4‐aminophenoxy)phenyl]hexafluoropropane and a pair of commercial aromatic dianhydrides

Organosoluble homopolyimides (PIs) and copolyimides (CoPIs) were synthesized from 2,2‐bis[4‐(4‐aminophenoxy)phenyl]propane (BAPP) or 2,2‐bis[4‐(4‐aminophenoxy)phenyl]hexafluoropropane (6FBAPP) and six kinds of commercial aromatic dianhydrides (PMDA, II _a ; BTDA, II _b ; BPDA, II _c ; ODPA, II _d ; DSDA, II _e ; 6FDA, II _f ). Although BAPP and II _d∼f could prepare three kinds of soluble PIs ( III‐A _d∼f ), likewise 6FBAPP and II _c∼f could prepare four PIs ( III‐B _c∼f ), the insoluble PIs were synthesized from these two diamines and other dianhydrides. However, soluble CoPIs could be prepared by alternative copolycondensation from a pair of dianhydrides of soluble PIs and insoluble PIs in certain molar ratios (m₁/m₂). The ratios of m₁/m₂ of BAPP/PMDA series CoPIs ( IV _{m1(d–f)/m2a} ) ranged from 3–5, but ratios of 6FBAPP/PMDA series CoPIs ( V _{m1(c∼f)/m2a} ) decreased to 2–3. The m₁/m₂ of the BAPP/BTDA and 6FBAPP/BTDA series CoPIs were 2, while the BAPP/BPDA series were between 1–2. Composition, solubility, tensile properties and thermal properties of these CoPIs synthesized via a two‐stage thermal cyclodehydration were determined and were compared with their corresponding PIs. © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 38: 3954–3961, 2000     

Crystallographic report: Dichloro(β‐methoxycarbonylethyl)tin(IV) isopropylxanthate

The Sn atom in CH₃OCOCH₂CH₂SnCl₂[S₂COCH(CH₃)₂] adopts a distorted octahedral geometry via the bidentate xanthate ligand and intramolecular carbonyl coordination. Copyright © 2005 John Wiley & Sons, Ltd.     

Carboboration Reactions of 1,2‐Bis[(diarylphosphino)ethynyl]benzenes with Tris(pentafluorophenyl)borane

The 1,2‐bis[(diarylphosphino)ethynyl]benzene derivatives 1a (R=Ph) and 1b (R=o‐tolyl) undergo 1,1‐carboboration at one of their acetylene units upon treatment with (C₆F₅)₃B at elevated temperature to give the products 5a and 5b , respectively. At room temperature, we observed the formation of the corresponding phosphireniumborate zwitterions, 7a and 7b , respectively, which may be intermediates of the 1,1‐carboboration reactions. The reaction of the more bulky 1,2‐bis[(dimesitylphosphino)ethynyl]benzene 1c with (C₆F₅)₃B takes a different course. At 110°, we observed the complete conversion to the benzopentafulvene derivative 8 which is probably formed in a typical carbocation rearrangement sequence after the initial (C₆F₅)₃B Lewis acid‐addition step. The compounds 5a, 5b, 7b , and 8 were characterized by X‐ray crystal‐structure analyses.     

Crystallographic report: L‐(−)‐Dichloro(β‐menthoxycarbonylethyl)tin N,N‐diethyldithiocarbamate

The tin atom in the title compound adopts a distorted octahedral geometry within a CCl₂OS₂ donor set. Copyright © 2005 John Wiley & Sons, Ltd.     

Crystallographic report: Cis‐[Zn(3,5‐dinitrobenzoato)2(1,10‐phenanthroline)2]·CH3CH2OH

Cis‐[Zn(3,5‐dinitrobenzoato)₂(1,10‐phenanthroline)₂]·CH₃CH₂OH features unidentate and cis‐disposed 3,5‐dinitrobenzoate ligands and chelating 1,10‐phenanthroline ligands so that a distorted octahedral N₄O₂ coordination geometry results. Copyright © 2005 John Wiley & Sons, Ltd.