Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Dean H. Johnston"'
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 77, Iss 9, Pp 880-886 (2021)
Ionic co-crystals are co-crystals between organic molecules and inorganic salt coformers. Co-crystals of pharmaceuticals are of interest to help control polymorph formation and potentially improve stability and other physical properties. We describe
Externí odkaz:
https://doaj.org/article/5f03ea5f0d764d019bc11918ddde6635
Autor:
Dean H. Johnston, Ikponmwosa Agho
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 11, Pp 1705-1711 (2019)
Charge-assisted hydrogen bonding plays a significant role in the crystal structures of solvates of ionic compounds, especially when the cation or cations are primary ammonium salts. We report the crystal structures of four ammonium salts of molybdenu
Externí odkaz:
https://doaj.org/article/9c0cf5fc1d8b471aa89a608ad12881a1
Publikováno v:
IUCrData, Vol 6, Iss 8, p x210778 (2021)
The title compound, [Mo(C5H7O2)2O2] or cis-[MoO2(acac)2] (acac is acetylacetonate), contains a molybdenum(VI) atom coordinated by two acetylacetonate ligands and two doubly bonded oxido ligands in a distorted octahedral shape. The molecule is chiral
Externí odkaz:
https://doaj.org/article/9ec68ed983fe4cafae48822e540c2e79
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 7, Pp m863-m864 (2012)
In the title compound, cis-[PtCl2(NH3)2]·C3H7NO, the metal complex molecules are stacked parallel to the b axis, forming close Pt...Pt interactions of 3.4071 (7) and 3.5534 (8) Å and weak N—H...Cl hydrogen bonds between the ammine ligand and the
Externí odkaz:
https://doaj.org/article/b343d44f1de34541918e06ea14f69018
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 3, Pp m312-m313 (2012)
The structure of the title compound, [Co(C5H6NO4)3], consists of a CoIII ion octahedrally coordinated by three bidentate 3-nitropentane-2,4-dionate ligands. The complex was prepared via the nitration of tris(2,4-pentanedionato-κ2O,O′)cobalt(III) w
Externí odkaz:
https://doaj.org/article/bc903707232942a58f3bd6703cc13567
Autor:
Colin R. Taylor, Dean H. Johnston
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 10, Pp o2735-o2735 (2011)
The title compound, C13H9N3O5, prepared as a solid derivative of 3-nitroanaline via reaction with 4-nitrobenzoyl chloride, crystallizes in a chiral space group. The molecule is non-planar with a dihedral angle of 26.1 (1)° between the two benzene ri
Externí odkaz:
https://doaj.org/article/88ecc42923534dd590f2bf89256fbca4
Autor:
Dean H. Johnston, Heather M. Crather
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 9, Pp o2276-o2277 (2011)
The title compound, C8H8N2O4, was prepared via the nitration of p-xylene. The molecules are stacked along the c axis in an antiparallel manner. The two nitro groups are rotated relative to the benzene ring with dihedral angles of 44.50 (7) and 31.67
Externí odkaz:
https://doaj.org/article/20a51ace27f14bf596874d18f3886901
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications
Acta Crystallographica Section E: Crystallographic Communications, Vol 77, Iss 9, Pp 880-886 (2021)
Acta Crystallographica Section E: Crystallographic Communications, Vol 77, Iss 9, Pp 880-886 (2021)
Five new bis(arylamide)dichloridozinc(II) complexes have been prepared and characterized. All of the complexes contain hydrogen bonds between the amide N—H group and the amide carbonyl oxygen atoms or the chlorine atoms, forming extended ne
Publikováno v:
Journal of Chemical Crystallography. 52:140-151
The crystal structures of two polymorphic forms of 1-butyl-3-methylimidazolium nitrate are reported. The form observed at 100 K and 200 K (Ia and Ib) crystallizes in the $$P{\bar{1}}$$ space group and contains two independent imidazolium cations and
Autor:
Aleksandr G. Smirnov, Munachimso Onuoha, Michelle S. Bechtel, Elizabeth Houser, Frank C. Peiris, Dean H. Johnston, Lindsey R. Madison, Catherine M. Mauck
Publikováno v:
Vibrational Spectroscopy. 126:103534