Judith A K Howard
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Explore the profile of Judith A K Howard including associated specialties, affiliations and a list of published articles.
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212
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1821
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Recent Articles
1.
Mason H, Howard J, Sparkes H
Acta Crystallogr C Struct Chem
. 2021 Dec;
77(Pt 12):777-781.
PMID: 34864720
The synthesis and structures of bis[4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole-κN,N]bis(thiocyanato-κN)cobalt(II), [Co(NCS)(CHN)] or Co(NCS)(abpt), and bis[4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole-κN,N]bis(thiocyanato-κN)nickel(II), [Ni(NCS)(CHN)] or Ni(NCS)(abpt), are reported. In both cases, two polymorphs, A and B, were identified and structurally characterized. For...
2.
Mason H, Howard J, Sparkes H
Acta Crystallogr C Struct Chem
. 2021 Oct;
77(Pt 10):659-667.
PMID: 34607989
The synthesis, single-crystal structures and chromic behaviour of three related Schiff bases, namely, (E)-2,4-di-tert-butyl-6-{[(4-fluorophenyl)imino]methyl}phenol, CHFNO, 1, (E)-2,4-di-tert-butyl-6-{[(4-chlorophenyl)imino]methyl}phenol, CHClNO, 2, and (E)-6-{[(4-bromophenyl)imino]methyl}-2,4-di-tert-butylphenol, CHBrNO, 3, are reported. Two polymorphs of 1 were...
3.
Robertson C, Winter S, Howard J, Probert M, Oakley R
Chem Commun (Camb)
. 2021 Sep;
57(79):10238-10241.
PMID: 34528050
The crystal structure of the radical ferromagnet 1a at 2 K reveals a contraction in the unit cell constant which, at the molecular level, translates into a decrease in slippage...
4.
Jornet-Molla V, Gimenez-Saiz C, Canadillas-Delgado L, Yufit D, Howard J, Romero F
Chem Sci
. 2021 Jun;
12(3):1038-1053.
PMID: 34163870
The iron(ii) salt [Fe(bpp)](isonicNO)·HisonicNO·5HO () (bpp = 2,6-bis(pyrazol-3-yl)pyridine; isonicNO = isonicotinate N-oxide anion) undergoes a partial spin crossover (SCO) with symmetry breaking at = 167 K to a mixed-spin phase...
5.
Widdifield C, Farrell J, Cole J, Howard J, Hodgkinson P
Chem Sci
. 2021 Jun;
11(11):2987-2992.
PMID: 34122800
Alternative ('repeat') determinations of organic crystal structures deposited in the Cambridge Structural Database are analysed to characterise the nature and magnitude of the differences between structure solutions obtained by diffraction...
6.
Mason H, Howard J, Sparkes H
Acta Crystallogr C Struct Chem
. 2020 Nov;
76(Pt 11):1001-1004.
PMID: 33148875
A new polymorph of (E)-4-bromo-2-[(phenylimino)methyl]phenol, CHBrNO, is reported, together with a low-temperature structure determination of the previously published polymorph. Both polymorphs were found to have an intramolecular O-H...N hydrogen bond...
7.
Ushakov E, Martyanov T, Vedernikov A, Efremova A, Moiseeva A, Kuzmina L, et al.
ACS Omega
. 2020 Oct;
5(40):25993-26004.
PMID: 33073126
The physicochemical properties of highly stable supramolecular donor-acceptor (D-A) complexes of a bis(18-crown-6)azobenzene (weak π-donor) with a series of bis(ammonioalkyl) derivatives of viologen-like molecules (π-acceptors) in acetonitrile were studied using...
8.
Mason H, Howard J, Sparkes H
Acta Crystallogr C Struct Chem
. 2020 Sep;
76(Pt 9):927-931.
PMID: 32887865
The synthesis and structures of three isoxazole-containing Schiff bases are reported, namely, (E)-2-{[(isoxazol-3-yl)imino]methyl}phenol, CHNO, (E)-2-{[(5-methylisoxazol-3-yl)imino]methyl}phenol, CHNO, and (E)-2,4-di-tert-butyl-6-{[(isoxazol-3-yl)imino]methyl}phenol, CHNO. All three structures contain an intramolecular O-H...N hydrogen bond, alongside weaker...
9.
A Reversible Hydrogen-Bond Isomerization Triggered by an Abrupt Spin Crossover near Room Temperature
Jornet-Molla V, Gimenez-Saiz C, Yufit D, Howard J, Romero F
Chemistry
. 2020 Aug;
27(2):740-750.
PMID: 32812653
The spin crossover salt [Fe(bpp) ](isonicNO) ⋅ 2.4 H O (1⋅2.4 H O) (bpp=2,6-bis(pyrazol-3-yl)pyridine; isonicNO=isonicotinate N-oxide anion) exhibits a very abrupt spin crossover at T =274.4 K. This triggers a...
10.
Medvedko A, Dalinger A, Nuriev V, Semashko V, Filatov A, Ezhov A, et al.
Nanomaterials (Basel)
. 2019 Jan;
9(1).
PMID: 30641896
The acylation of unsymmetrical -benzylbispidinols in aromatic solvents without an external base led to the formation of supramolecular gels, which possess different thicknesses and degrees of stability depending on the...