A Novel 3D Salen Neodymium Framework with Near-Infrared (NIR) Properties

2017 ◽  
Vol 70 (3) ◽  
pp. 265
Author(s):  
Shushen Chi ◽  
Hongfeng Li ◽  
Peng Chen ◽  
Ting Gao ◽  
Yu Yang ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Near Infrared ◽  
3D Structure ◽  
Lanthanide Complex ◽  
Crystallographic Analysis ◽  
X Ray ◽  
Bridging Ligand ◽  
Hydrogen Bond Interactions ◽  
Counter Ions

The reaction of N,N′-bis(3-hydroxy)ethylene-1,2-diamine (H2salen) with Nd(NO3)3·6H2O and NdCl3·6H2O yields a novel lanthanide complex, namely, Nd(salen)2(NO3)2Cl (1). X-ray crystallographic analysis revealed that H2salen effectively functions as a bridging ligand forming a kind of novel 3D structure complex which is constructed by Salen ligands and mixed lanthanide counter-ions without π–π stacking and hydrogen bond interactions. This is the first Salen-type 3D lanthanide complex to be constructed in this way. The near-infrared (NIR) properties of 1 in the solid state were also studied.

scholarly journals Stepwise Synthesis, Hydrogen-Bonded Supramolecular Structure, and Magnetic Property of a Co–Mn Heterodinuclear Complex

2019 ◽  
Vol 5 (1) ◽  
pp. 5
Author(s):  
Ryoji Mitsuhashi ◽  
Takaaki Ueda ◽  
Masahiro Mikuriya
Keyword(s):  
Hydrogen Bond ◽  
Magnetic Property ◽  
Field Dependence ◽  
Crystallographic Analysis ◽  
Two Dimensional ◽  
Stepwise Synthesis ◽  
X Ray ◽  
Hydrogen Bond Interactions ◽  
Divalent State ◽  
Hydrogen Bond Networks

A cobalt(III)–manganese(II) heterometallic dinuclear complex, [MnII{CoIII(µ-Himn)3}Cl2(CH3OH)], was prepared by a metalloligand approach. X-ray crystallographic analysis indicated that the metalloligand [CoIII(Himn)3] underwent mer/fac geometrical isomerization upon coordination to a Mn ion. Owing to the non-coordinating N–H bonds in the [CoIII(Himn)3] moiety, the heterodinuclear complex exhibited hydrogen bond interactions with the Cl− ligand of the neighboring complex to construct two-dimensional hydrogen-bond networks. The bond distances around the Mn center and the χMT value at 300 K indicate that the Mn center is in a divalent state. The temperature dependence of the χMT product and field dependence of the magnetization showed the isotropic nature of the MnII center.

A photodimer of a 4-phenyl-4H-pyran

2006 ◽  
Vol 62 (5) ◽  
pp. o1951-o1953 ◽  
Author(s):  
Hong Yan ◽  
Hui-Qin Wang ◽  
Cheng-Liang Ni ◽  
Xiu-Qing Song
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bond ◽  
Solid State ◽  
Mass Spectroscopy ◽  
Elemental Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
H Nmr ◽  
Hydrogen Bond Interactions

A new cage photodimer, tetraethyl 2,4,8,10-tetramethyl-6,12-diphenyl-3,9-dioxapentacyclo[6.4.0.02,7.04,11.05,10]dodecane-1,5,7,11-tetracarboxylate, C38H44O10, was prepared through [2+2]-photocycloaddition of diethyl 2,6-dimethyl-4-phenyl-4H-pyran-3,5-dicarboxylate in the solid state. The molecular structure was elucidated by X-ray diffraction analysis, 1H NMR, IR and mass spectroscopy, and elemental analysis. The molecule possesses a crystallographically imposed centre of symmetry. The crystal structure is stabilized by weak C—H...O hydrogen-bond interactions.

X-ray Crystal Structure of a Metalled Double-Helix Generated by Infinite and Consecutive C*-AgI -C* (C*:N1 -Hexylcytosine) Base Pairs through Argentophilic and Hydrogen Bond Interactions

2017 ◽  
Vol 23 (9) ◽  
pp. 2103-2108 ◽  
Author(s):  
Angel Terrón ◽  
Blas Moreno-Vachiano ◽  
Antonio Bauzá ◽  
Angel García-Raso ◽  
Juan Jesús Fiol ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Double Helix ◽  
Base Pairs ◽  
X Ray ◽  
Hydrogen Bond Interactions

scholarly journals 1-[N-Methyl-N-(Phenyl)amino]-3- (4-Methylphenyl)Thiourea

Molbank ◽  
10.3390/m1052 ◽  
2019 ◽  
Vol 2019 (1) ◽  
pp. M1052 ◽  
Author(s):  
Chien Yeo ◽  
Edward Tiekink
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Single Crystal ◽  
Elemental Analysis ◽  
Title Compound ◽  
Molecular Conformation ◽  
Phenyl Hydrazine ◽  
X Ray ◽  
X Ray Crystallography

The title compound, 1-[N-methyl-N-(phenyl)amino]-3-(4-methylphenyl)thiourea (1), was synthesized by the reaction of 1-methyl-1-phenyl hydrazine and 4-tolyl isothiocyanate, and was characterized by spectroscopy (1H and 13C{1H} NMR, IR, and UV), elemental analysis as well as by single crystal X-ray crystallography. In the solid state, the molecule exists as the thioamide tautomer and features an anti-disposition of the thioamide–N–H atoms; an intramolecular N–H⋯N hydrogen bond is noted. The molecular conformation resembles that of the letter L. In the molecular packing, thioamide-N1–H⋯S1(thione) hydrogen bonds lead to centrosymmetric eight-membered {⋯HNCS}2 synthons. The dimers are assembled into a supramolecular layer in the bc-plane by phenyl- and methyl-C–H⋯π(phenyl) interactions.

scholarly journals A Novel DR/NIR T-Shaped AIEgen: Synthesis and X-Ray Crystal Structure Study

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 269 ◽  
Author(s):  
Rosita Diana ◽  
Ugo Caruso ◽  
Luigi Di Costanzo ◽  
Gelsomina Bakayoko ◽  
Barbara Panunzi
Keyword(s):  
Crystal Structure ◽  
Near Infrared ◽  
Condensation Product ◽  
Infrared Emission ◽  
Structure Study ◽  
X Ray ◽  
Hydrogen Bond Interactions ◽  
Main Plane ◽  
Donor Acceptor ◽  
Intramolecular Hydrogen

We developed a new benzodifuran derivative as the condensation product between 2,6-diamino-4-(4-nitrophenyl)benzo[1,2-b:4,5-b’]difuran-3,7-dicarboxylate and 3-hydroxy-2-naphthaldehyde. The intramolecular hydrogen-bond interactions in the terminal half-salen moieties produce a sterically encumbered highly conjugated main plane and a D-A-D (donor-acceptor-donor) T-shaped structure. The novel AIEgen (aggregation-induced enhanced emission generator) fulfils the requirement of RIR (restriction of intramolecular rotation) molecules. DR/NIR (deep red/near infrared) emission was recorded in solution and in the solid state, with a noteworthy photoluminescence quantum yield recorded on the neat crystals which undergo some mechanochromism. The crystal structure study of the probe from data collected at a synchrotron X-ray source shows a main aromatic plane π-stacked in a columnar arrangement.

Synthesis of ReItricarbonyl complexes with various sulfur- and oxygen-donating ligands: crystal structures of two ReIdinuclear structures bridged by S atoms

2018 ◽  
Vol 74 (10) ◽  
pp. 1116-1122
Author(s):  
Pheello I. Nkoe ◽  
Hendrik G. Visser ◽  
Chantel Swart ◽  
Alice Brink ◽  
Marietjie Schutte-Smith
Keyword(s):  
Hydrogen Bond ◽  
Intermolecular Hydrogen Bond ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Metal Centre ◽  
Pyridine Ligand ◽  
X Ray ◽  
Hydrogen Bond Interactions ◽  
Mononuclear Complexes

The synthesis and characterization of two dinuclear complexes, namelyfac-hexacarbonyl-1κ3C,2κ3C-(pyridine-1κN)[μ-2,2′-sulfanediyldi(ethanethiolato)-1κ2S1,S3:2κ3S1,S2,S3]dirhenium(I), [Re2(C4H8S3)(C5H5N)(CO)6], (1), and tetraethylammoniumfac-tris(μ-2-methoxybenzenethiolato-κ2S:S)bis[tricarbonylrhenium(I)], (C8H20N)[Re2(C7H7OS)3(CO)6], (2), together with two mononuclear complexes, namely (2,2′-bithiophene-5-carboxylic acid-κ2S,S′)bromidotricarbonylrhenium(I), (3), and bromidotricarbonyl(methyl benzo[b]thiophene-2-carboxylate-κ2O,S)rhenium(I), (4), are reported. Crystals of (1) and (2) were characterized by X-ray diffraction. The crystal structure of (1) revealed two Re—S—Re bridges. The thioether S atom only bonds to one of the ReImetal centres, while the geometry of the second ReImetal centre is completed by a pyridine ligand. The structure of (2) is characterized by three S-atom bridges and an Re...Re nonbonding distance of 3.4879 (5) Å, which is shorter than the distance found for (1) [3.7996 (6)/3.7963 (6) Å], but still clearly a nonbonding distance. Complex (1) is stabilized by six intermolecular hydrogen-bond interactions and an O...O interaction, while (2) is stabilized by two intermolecular hydrogen-bond interactions and two O...π interactions.

Single Crystal Formation by Solid-State Reaction Between p-Benzoquinone and 2,4,5-Trichlorophenol

2002 ◽  
Vol 55 (4) ◽  
pp. 271 ◽  
Author(s):  
N. B. Singh ◽  
A. Pathak ◽  
R. Fröhlich
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Single Crystal ◽  
Single Crystals ◽  
Solid State Reaction ◽  
Carbonyl Oxygen ◽  
Crystal Formation ◽  
X Ray Diffraction ◽  
X Ray

Vapours of p-benzoquinone (BQ) have been found to react with solid 2,4,5-trichlorophenol (TCP). The reaction product (BQ-TCP) separated in the form of monoclinic single crystals, the structure of which was determined by X-ray diffraction to reveal that the two molecules are linked by a single hydrogen bond between the carbonyl oxygen of BQ and the phenolic hydrogen of TCP.

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