Chemistry in Environmentally Benign Media. 7.1Chelating Hydroxymethyl-Functionalized Bisphosphines as Building Blocks to Water-Soluble andin-Vitro-Stable Gold(I) Complexes. Synthesis, Characterization, and X-ray Crystal Structures of [Au{(HOH2C)2PC6H4P(CH2OH)2}2]Cl and [Au2{(HOH2C)2PCH2CH2P(CH2OH)2}2]Cl2

1997 ◽  
Vol 36 (13) ◽  
pp. 2765-2769 ◽  
Author(s):  
Douglas E. Berning ◽  
Kattesh V. Katti ◽  
Charles L. Barnes ◽  
Wynn A. Volkert ◽  
Alan R. Ketring
Keyword(s):  
Crystal Structures ◽  
Building Blocks ◽  
Water Soluble ◽  
Environmentally Benign ◽  
X Ray

Preparation and Crystal Structures of the Isotypic Compounds CdXO4 · 2 HgO (X = S, Se)

2004 ◽  
Vol 59 (3) ◽  
pp. 281-285 ◽  
Author(s):  
Matthias Weil
Keyword(s):  
Single Crystals ◽  
Crystal Structures ◽  
Diffraction Data ◽  
Building Blocks ◽  
Data Sets ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
Space Group ◽  
X Ray ◽  
Structure Factors

Colourless single crystals of the compounds CdXO4 · 2 HgO (X = S, Se) were obtained under hydrothermal conditions (250 °C, 5 d), starting from stoichiometric amounts of HgO, CdSO4 ·7H2O and CdSeO4 ·2H2O, respectively. The crystal structures were determined from X-ray diffraction data sets. The CdXO4 · 2HgO compounds crystallise isotypically with two formula units in space group P1̅ (# 2) [CdSO4 · 2HgO (CdSeO4 · 2HgO): a = 6.793(2) (6.9097(5)) Å , b = 7.205(2) (7.1786(6)) Å , c=7.359(2) (7.4556(6)) Å ,α =73.224(6) (74.586(2))°, β =66.505(6) (68.229(1))°, γ =63.054(5) (63.886(1))°, 1670 (1786) structure factors, 92 parameters, R[F2 > 2σ(F2)] = 0.0379 (0.0244)] and are made up from zig-zag [O-Hg-O]∞ chains with very short bonds of d̅(Hg-O) 2.025 Å , distorted [CdO6] octahedra (d̅(Cd-O)= 2.297 Å ), and XO4 tetrahedra (d̅(S-O)= 1.458 Å , d̅(Se-O)= 1.633 Å ) as the main building blocks. The CdXO4 ·2HgO compounds reveal no structural relationship with the corresponding HgXO4 ·2HgO phases

Synthesis of novel optically pure β-lactams

2005 ◽  
Vol 83 (1) ◽  
pp. 28-36 ◽  
Author(s):  
Yan Yang ◽  
Fengyun Wang ◽  
Fernande D Rochon ◽  
Margaret M Kayser
Keyword(s):  
Crystal Structures ◽  
Building Blocks ◽  
Baker’S Yeast ◽  
Staudinger Reaction ◽  
Baker's Yeast ◽  
X Ray ◽  
Pure Compounds ◽  
Optically Pure ◽  
Aspartyl Proteases

Several new β-lactams were synthesized as racemates via a Staudinger reaction. The corresponding optically pure compounds were obtained in subsequent biotransformation steps either through baker's yeast reduction or lipase resolution. Their absolute configurations were established. The X-ray crystal structures of three new substituted β-lactams are reported here. These compounds represent key building blocks for a variety of medicinally important molecules, including inhibitors of aspartyl proteases and Taxol® analogues.Key words: optically pure β-lactams, lipase resolutions, baker's yeast reductions, Staudinger reaction.

Synthesis and Crystal Structures of Indole Derivatives and Indolo[2,3-a]carbazoles as Building Blocks to or as Protein Kinase C Inhibitors

1997 ◽  
Vol 52 (10) ◽  
pp. 1251-1258 ◽  
Author(s):  
Dieter Schollmeyer ◽  
Young-Shin Kim ◽  
Ulf Pindur
Keyword(s):  
Protein Kinase C ◽  
Protein Kinase ◽  
Crystal Structures ◽  
Building Blocks ◽  
Indole Derivatives ◽  
X Ray ◽  
Protein Kinase C Inhibitors ◽  
Kinase C ◽  
Structure Activity ◽  
New Protein

The functionalization reactions of 2,2’-bisindolyls with electrophiles and dienophiles gave rise to a group of new protein kinase C inhibitors. Rationalization of structure activity relationships and of some mechanistical aspects concerning the synthesis X ray crystal structures are described for 2,2’-bisindolyl derivatives 1-3 and 6 and for indolo[a]carbazoles 4 and 5.

Synthesis, X-ray crystal structures, and computational studies of 1,1′-bridged 4,4′-diaryl-2,2′-bibenzimidazoles: building blocks for supramolecular structures

2009 ◽  
Vol 7 (11) ◽  
pp. 2347 ◽  
Author(s):  
Derik K. Frantz ◽  
Ashley A. Sullivan ◽  
Yoshizumi Yasui ◽  
Anthony Linden ◽  
Kim K. Baldridge ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Building Blocks ◽  
Supramolecular Structures ◽  
Computational Studies ◽  
X Ray

Direct formation of new water soluble Re and Tc complexes containing PTA (1,3,5-triaza-7-phosphaadamantane) from their permetallated salts. Reactivity and X-ray crystal structures

2018 ◽  
Vol 470 ◽  
pp. 352-359 ◽  
Author(s):  
Lorenza Marvelli ◽  
Paola Bergamini ◽  
Andrea Marchi ◽  
Giada Bersani ◽  
Valeria Ferretti ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Water Soluble ◽  
X Ray ◽  
Direct Formation

scholarly journals Assembling Polyiodides and Iodobismuthates Using a Template Effect of a Cyclic Diammonium Cation and Formation of a Low-Gap Hybrid Iodobismuthate with High Thermal Stability

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2765
Author(s):  
Tatiana A. Shestimerova ◽  
Andrei V. Mironov ◽  
Mikhail A. Bykov ◽  
Anastasia V. Grigorieva ◽  
Zheng Wei ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
Building Blocks ◽  
High Thermal Stability ◽  
X Ray Diffraction ◽  
Template Effect ◽  
X Ray ◽  
Solvent Water ◽  
Molecular Solid

Exploiting a template effect of 1,4-diazacycloheptane (also known as homopiperazine, Hpipe), four new hybrid iodides, (HpipeH2)2Bi2I10·2H2O, (HpipeH2)I(I3), (HpipeH2)3I6·H2O, and (HpipeH2)3(H3O)I7, were prepared and their crystal structures were solved using single crystal X-ray diffraction data. All four solid-state crystal structures feature the HpipeH22+ cation alternating with Bi2I104–, I3–, or I– anions and solvent water or H3O+ cation. HpipeH22+ assembles anionic and neutral building blocks into polymer structures by forming four strong (N)H···I and (N)H···O hydrogen bonds per cation, with the H···I distances ranging from 2.44 to 2.93 Å and H···O distances of 1.88–1.89 Å. These hydrogen bonds strongly affect the properties of compounds; in particular, in the case of (HpipeH2)2Bi2I10·2H2O, they ensure narrowing of the band gap down to 1.8 eV and provide high thermal stability up to 240 °C, remarkable for a hydrated molecular solid.

Luminescent Gold(I)-Thallium(I) Arrays through N-Bidentate Building Blocks

2004 ◽  
Vol 59 (11-12) ◽  
pp. 1379-1386 ◽  
Author(s):  
Eduardo J. Fernández ◽  
Peter G. Jones ◽  
Antonio Laguna ◽  
José M. López-de-Luzuriaga ◽  
Miguel Monge ◽  
...  
Keyword(s):  
Solid State ◽  
Crystal Structures ◽  
Three Dimensional ◽  
Building Blocks ◽  
Donor Ligands ◽  
X Ray Diffraction ◽  
Donor Ligand ◽  
X Ray ◽  
Wide Range

Heteropolynuclear gold(I)-thallium(I) complexes of the type [TlLn][Au(C6F5)2] (L = py (2), 2,2’- bipy (3), 1,10-phen (4) or 4,4’-bipy and THF (5); n = 1, 2) have been obtained from reactions of the corresponding N-donor ligands with the precursor {Tl[Au(C6F5)2]}n (1). The crystal structures of complexes 3 - 5 have been determined by X-ray diffraction showing one- (3, 4) or three-dimensional (5) arrays. All complexes are photoluminescent in the solid state at RT and at 77 K. The strong visible emissions of complexes 2 - 5 are displayed over a wide range of wavelengths (460 - 620 nm) depending on the environment of the thallium(I) centres and on the nature of the N-donor ligand.

Sign in / Sign up

Export Citation Format

Share Document