Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Rafal Kulmaczewski"'
Publikováno v:
Magnetochemistry, Vol 5, Iss 1, p 9 (2019)
Two phenyl ester and three benzyl ester derivatives have been synthesized from 2,6-di(pyrazol-1-yl)pyridine-4-carboxylic acid and the appropriate phenyl or benzyl alcohol using N,N’-dicyclohexylcarbodiimide as the coupling reagent. Complexation of
Externí odkaz:
https://doaj.org/article/774bfc686a514816bd04eaa973a4c344
Autor:
Rafal Kulmaczewski, Isaac T. Armstrong, Pip Catchpole, Emily S. J. Ratcliffe, Hari Babu Vasili, Stuart L. Warriner, Oscar Cespedes, Malcolm A. Halcrow
Publikováno v:
Chemistry – A European Journal. 29
Four bis[2-{pyrazol-1-yl}-6-{pyrazol-3-yl}pyridine] ligands have been synthesized, with butane-1,4-diyl (L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12c51892cbc69135546426693490262b
https://doi.org/10.1002/chem.202202578
https://doi.org/10.1002/chem.202202578
Structures and Spin States of Iron(II) Complexes of Isomeric 2,6-Di(1,2,3-triazolyl)pyridine Ligands
Autor:
Jack Woodworth, Izar Capel Berdiell, Rafal Kulmaczewski, Malcolm A. Halcrow, Oscar Cespedes, Daniel J. Davies
Publikováno v:
Inorganic Chemistry. 60:14988-15000
Iron(II) complex salts of 2,6-di(1,2,3-triazol-1-yl)pyridine (L1) are unexpectedly unstable in undried solvent. This is explained by the isolation of [Fe(L1)4(H2O)2][ClO4]2 and [Fe(NCS)2(L1)2(H2O)2]·L1, containing L1 bound as a monodentate ligand ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd6181a8ea2cea8770e8c7a0bf05646a
https://doi.org/10.1021/acs.inorgchem.1c02404
https://doi.org/10.1021/acs.inorgchem.1c02404
Iron/2,6‐Di(pyrazol‐1‐yl)pyridine Complexes with a Discotic Pattern of Alkyl or Alkynyl Substituents
Publikováno v:
European Journal of Inorganic Chemistry. 2021:2999-3007
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afea9cd018a4038a3601d8059905f2d2
https://doi.org/10.1002/ejic.202100435
https://doi.org/10.1002/ejic.202100435
Autor:
Rafal Kulmaczewski, Laurence J. Kershaw Cook, Christopher M. Pask, Oscar Cespedes, Malcolm A. Halcrow
The complex salts [Fe(L1)2]X2 (1X2; L1 = 4-(isopropyldisulfanyl)-2,6-bis(pyrazolyl)pyridine; X– = BF4–, ClO4–) form solvated crystals from common organic solvents. Crystals of 1X2·Me2CO show abrupt spin transitions near 160 K, with up to 22 K
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5169cf67489ca460e4399e56ed38916d
Autor:
Izar Capel Berdiell, Stuart L. Warriner, Malcolm A. Halcrow, Oscar Cespedes, Rafal Kulmaczewski
Publikováno v:
European Journal of Inorganic Chemistry. 2020:4334-4340
Treatment of 2,4,6‐trifluoropyridine with sodium imidazolate, then 2 equiv. sodium pyrazolate, in two reaction steps yields the title ligand L in 40 % overall yield. Crystalline [FeL2][BF4]2 and [FeL2][ClO4]2 are isostructural high‐spin complexes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b8fd57682ca7bb62d91a0173f09b3b3
https://doi.org/10.1002/ejic.202000782
https://doi.org/10.1002/ejic.202000782
Publikováno v:
Chemical communications (Cambridge, England). 57(53)
Crystals of [FeL2][BF4]2·nMeCN (L = N-(2,6-di{pyrazol-1-yl}pyrid-4-yl)acetamide; n = 1 or 2) and [FeL2][ClO4]2·MeCN are isomorphous. When n = 1 the compounds exhibit an abrupt, hysteretic spin-transition below 200 K, but when n = 2 the material rem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11e820975445211321ac54f7646ef07a
https://pubmed.ncbi.nlm.nih.gov/34113938
https://pubmed.ncbi.nlm.nih.gov/34113938
Autor:
Iurii Galadzhun, Oscar Cespedes, Namrah Shahid, Rafal Kulmaczewski, Mark J. Howard, Malcolm A. Halcrow
[Fe(bpp)2][BF4]2 (bpp = 2,6-di{pyrazol-1-yl}pyridine) derivatives bearing a bent geometry of hexadec-1-ynyl or hexadecyl substituents pyrazole are isomorphous, and high-spin at room temperature. However, only the latter compound undergoes an abrupt,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac3df0535ead75dd8ceb12d02fd8f3bc
Publikováno v:
Dalton transactions (Cambridge, England : 2003). 50(10)
The temperature of the solution-phase spin-crossover equilibrium in iron(II) complexes of 4-alkylsulfanyl-2,6-di{pyrazol-1-yl}pyridine (bppSR) complexes depends strongly on the alkylsulfanyl substituent. DFT calculations imply this reflects the confo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf664bcbe641eb5408c009e2ba57f8d4
https://pubmed.ncbi.nlm.nih.gov/33660725
https://pubmed.ncbi.nlm.nih.gov/33660725
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 27(6)
4-(tert-Butylsulfanyl)-2,6-di(pyrazol-1-yl)pyridine (L) was obtained in low yield from a one-pot reaction of 2,4,6-trifluoropyridine with 2-methylpropane-2-thiolate and sodium pyrazolate in a 1:1:2 ratio. The materials [FeL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::24e788886e29d6023711a6a18140a365
https://pubmed.ncbi.nlm.nih.gov/33073890
https://pubmed.ncbi.nlm.nih.gov/33073890