Complexes of heteroscorpionate trispyrazolylborate ligands. Part XI. Weak CH/π interactions in crystals of hydrotris(3-phenylpyrazolyl)boratothallium(I) and hydrobis(5-methyl-3-phenylpyrazolyl)(3,5-dimethylpyrazol-yl)boratothallium(I) studied by X-ray crystallography

Ciunik, Zbigniew; Ruman, Tomasz; Łukasiewicz, Marta; Wołowiec, Stanisław

doi:10.1016/j.molstruc.2003.12.002

Cited by 17 publications

(3 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Tl−N bonds (2.804(5) Å) are ca. 0.2 Å longer than those in TlTp Ph . In addition, there are short contacts (Tl···N 3.211 Å) between the Tl atom and N atoms from the CN substituents of three adjacent Tp ligands (Figure ).…”

Section: Resultsmentioning

confidence: 96%

Sandwich Compounds of Cyanotrispyrazolylborates: Complexation-Induced Ligand Isomerization

et al. 2007

View full text Add to dashboard Cite

Reaction of the new cyanoscorpionate ligand, hydrotris(4-cyano-3-phenyl)pyrazolylborate (Tp(Ph),(4CN)) with Co(II), Mn(II), and Fe(II) unexpectedly results in the isolation only of crystals containing sandwich complexes in which the ligands have been isomerized to produce the heterocyanoscorpionate hydrobis(4-cyano-3-phenylpyrazolyl)(4-cyano-5-phenylpyrazolyl)borate (Tp(Ph),(4CN*)). The three complexes have been characterized crystallographically and are isostructural, with each ligand acting in a tridentate manner toward the metal. The isomerization of the ligand appears to be more facile than that of the analogous non-cyano ligand, Tp(Ph), with which crystals of the unisomerized sandwich compound have been isolated for Mn(II) and Fe(II).

show abstract

Section: Resultsmentioning

confidence: 96%

Sandwich Compounds of Cyanotrispyrazolylborates: Complexation-Induced Ligand Isomerization

et al. 2007

View full text Add to dashboard Cite

show abstract

“…The shortest Tl···Tl contacts (ca. 2.9 Å) occur between two covalently bonded Tl(II) centers − or between Tl(II) centers in mixed-valent Tl(I)Tl(II) systems. , Bonding between thallium atoms has also been observed in thallium(I) amide compounds, , pyrazolyl borate derivatives, − and several in thallium(I) organometallic species. − There is also a handful of examples with bonding in bimetallic or cluster compounds, as well as with sulfur , or phosphorus donor atoms . Thallophillic interactions (as distinct from thallophilic organisms) have been explicitly named only recently …”

Section: Introductionmentioning

confidence: 99%

Thallophilic Interactions in Aryloxide Compounds: the {Tl₂(μ₂-OAr)₄} Structural Motif in (TlOAr)₄ and Tl₂Cu(OAr)₄ Compounds

et al. 2006

View full text Add to dashboard Cite

Two thallium aryloxide compounds TlOC6F5 (TlOAr(F)) and bis-3,5-TlOC6H3(CF3)2 (TlOAr') have been recrystallized from THF and crystallographically characterized in different isomeric forms. The latter compound forms a solvated tetrameric cubane, [TlOAr']4.THF, 1. The TlOAr(F) compound crystallized with a similar stoichiometry, [TlOAr(F)]4.2 THF, 2, but contains a [Tl2(mu2-OAr(F))4] unit that includes a thallophilic interaction at a distance of 3.5943(15) angstroms. Solution 205Tl and 203Tl NMR studies of 1 and 2 support the retention of a cubane structure for 1 in solution and suggest a similar structure for 2 with coupled thallium centers down to -90 degrees C. Fluorescence spectroscopy data for both compounds 1 and 2 in THF are consistent with LMCT. DFT calculations of 1, 2, and three models of the [Tl2(mu2-OAr(F))4] unit show a bonding overlap of the bridged thallium atoms in 2 and are also used to describe the bonding in 1. The structures of two heterobimetallic compounds, Tl2Cu(OAr(F))4, 4, and Tl2Cu(OAr')4, 5, with the [Tl2(mu2-OAr(F))4] structural motif and thallophilic contacts of 3.86(6) and 3.564(1) angstroms, respectively, are described. The crystal structures of the unsolvated of TlOAr(F), 2b, solvated heterobimetallic derivative Tl2Cu(OAr')4.2THF, 5b, and the monomeric (18-crown-6)TlOAr(F), 3, and 205Tl NMR spectra of TlOC6H5, 6, are also reported for comparison purposes.

show abstract

“…In this study, the applied analytical method allowed for rapid screening for fentanyl and other illicit drugs. The sample preparation for 109 AgNP-assisted LDI MS is a matter of minutes, with the spectral data acquisition itself taking even less time. − Recently, our research has successfully applied this technique for both qualitative and quantitative analysis of low molecular weight compounds, including amino acids, − carboxylic acids, − and hormones . Furthermore, this method has shown exceptional utility in analyzing microorganisms − and various human biological samples such as serum, urine, , and tissue.…”

Section: Introductionmentioning

confidence: 99%

Fiber Laser-Generated Silver-109 Nanoparticles for Laser Desorption/Ionization Mass Spectrometry of Illicit Drugs

Krupa,

Nizioł

2024

J. Am. Soc. Mass Spectrom.

View full text Add to dashboard Cite

Cannabinoids and opioids are the most prominently used drugs in the world, with fentanyl being the main cause of drug overdose-related deaths. Monitoring drug use in groups as well as in individuals is an important forensic concern. Analytical methods, such as mass spectrometry (MS), have been found most useful for the identification of drug abuse on a small and large scale. Pulsed fiber laser 2D galvoscanner laser-generated nanomaterial (PFL 2D GS LGN) was obtained from monoisotopic silver-109. Nanomaterial was used for laser desorption/ionization mass spectrometry of selected illicit drug standards with standard highresolution reflectron-based time-of-flight MALDI apparatus. Δ 9 -THC, 11-OH-THC, 11-COOH-THC, fentanyl, codeine, 6-monoacetylmorphine (6-MAM), heroin, tramadol, and methadone were chosen as test compounds. Illicit drugs were tested in a concentration range from 100 μg/mL to 10 pg/mL, equating to 50 μg to 50 fg per measurement spot. For all analyzed compounds, identification and quantification by silver-109-assisted laser desorption/ionization (LDI) MS was possible, with uncommon [M + 109 Ag 3 ] + and [M − H] + ions present for certain structures. The results of the quantitative analysis of drugs using silver-109 PFL 2D GS LGN for LDI MS are presented. Laser-generated NPs are proven to be useful for the analysis of selected drugs, with exceptionally good results for fentanyl monitoring in a broad range of concentrations.

show abstract

Complexes of heteroscorpionate trispyrazolylborate ligands. Part XI. Weak CH/π interactions in crystals of hydrotris(3-phenylpyrazolyl)boratothallium(I) and hydrobis(5-methyl-3-phenylpyrazolyl)(3,5-dimethylpyrazol-yl)boratothallium(I) studied by X-ray crystallography

Cited by 17 publications

References 46 publications

Sandwich Compounds of Cyanotrispyrazolylborates: Complexation-Induced Ligand Isomerization

Sandwich Compounds of Cyanotrispyrazolylborates: Complexation-Induced Ligand Isomerization

Thallophilic Interactions in Aryloxide Compounds: the {Tl₂(μ₂-OAr)₄} Structural Motif in (TlOAr)₄ and Tl₂Cu(OAr)₄ Compounds

Fiber Laser-Generated Silver-109 Nanoparticles for Laser Desorption/Ionization Mass Spectrometry of Illicit Drugs

Contact Info

Product

Resources

About

Complexes of heteroscorpionate trispyrazolylborate ligands. Part XI. Weak CH/π interactions in crystals of hydrotris(3-phenylpyrazolyl)boratothallium(I) and hydrobis(5-methyl-3-phenylpyrazolyl)(3,5-dimethylpyrazol-yl)boratothallium(I) studied by X-ray crystallography

Cited by 17 publications

References 46 publications

Sandwich Compounds of Cyanotrispyrazolylborates: Complexation-Induced Ligand Isomerization

Sandwich Compounds of Cyanotrispyrazolylborates: Complexation-Induced Ligand Isomerization

Thallophilic Interactions in Aryloxide Compounds: the {Tl2(μ2-OAr)4} Structural Motif in (TlOAr)4 and Tl2Cu(OAr)4 Compounds

Fiber Laser-Generated Silver-109 Nanoparticles for Laser Desorption/Ionization Mass Spectrometry of Illicit Drugs

Contact Info

Product

Resources

About

Thallophilic Interactions in Aryloxide Compounds: the {Tl₂(μ₂-OAr)₄} Structural Motif in (TlOAr)₄ and Tl₂Cu(OAr)₄ Compounds