X-Ray crystal structure of a planar, high-spin iron(II) complex of a pentadentate unsaturated macrocycle formed by reaction of 2,9-di(1-methylhydrazino)1,10-phenanthroline monohydrochloride with 2,6-diacetylpyridine

1978 ◽  
pp. 828 ◽  
Author(s):  
Michael M. Bishop ◽  
Jack Lewis ◽  
Timothy D. O'Donoghue ◽  
Paul R. Raithby ◽  
John N. Ramsden
Keyword(s):  
Crystal Structure ◽  
High Spin ◽  
X Ray ◽  
High Spin Iron

Crystal structure of μ-Oxo-bis-fac-[triaqua-1,10-phenanthrolineiron(III)] Tetrakis(nitrate) monohydrate

1984 ◽  
Vol 37 (7) ◽  
pp. 1405 ◽  
Author(s):  
PC Healy ◽  
JM Patrick ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Least Squares ◽  
High Spin ◽  
Iron Atom ◽  
Title Compound ◽  
Water Molecules ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Spin Iron

The crystal structure of the title compound, [(OH2)3(phen)FeOFe(phen)(OH2)3](NO3)4.(H2O)(phen = 1,10-phenanthroline), has been determined by single-crystal X-ray diffraction methods at 295 K, being refined by least-squares methods to a residual of 0.059 for 3467 independent 'observed'reflections. Crystals are monoclinic, P 21/c, a 18.202(6), b 9.771(4), c 19.459(7) �, β 94.46(3)�, Z = 4. Two of the four anions are disordered. Within the cation, the geometry is typical of high-spin iron(III). O(bridge)-Fe are 1.765(4), 1.784(4) �, with Fe-O-Fe 162.0(3)�. The three water molecules in the coordination sphere of each iron atom are fac; those trans to the O-Fe bond have long Fe-(OH2) distances [2.154(5), 2.125(5) �] compared to those trans to the phenanthroline chelates [2.028(5)-2.037(5) �]. Fe-N range from 2.143(6) to 2.166(6) �.

High-spin α low-spin transition in [Fe(NCS)2(4,4′-bis-1,2,4-triazole)2](H2O). X-ray crystal structure and magnetic, mössbauer and EPR properties

Polyhedron ◽  
1990 ◽  
Vol 9 (24) ◽  
pp. 2971-2979 ◽  
Author(s):  
Wim Vreugdenhil ◽  
John H. Van Diemen ◽  
Rudolf A.G. De Graaff ◽  
Jaap G. Haasnoot ◽  
Jan Reedijk ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Spin ◽  
Spin Transition ◽  
X Ray

Ferrimagnets made by assembling high- spin organic polyradicals by mean of complexation with magnetic metal ions. Vii. One- dimensional chains made by an alternating array of mn(ll)(hfac)2 and 1,3- bis(n- oxy- tert-butylamino)benzenes

1995 ◽  
Vol 413 ◽  
Author(s):  
Katsuya Inoue ◽  
Hiizu lwamura
Keyword(s):  
Crystal Structure ◽  
Metal Ions ◽  
High Spin ◽  
Transition Temperatures ◽  
Monodentate Ligand ◽  
Monoclinic System ◽  
One Dimensional ◽  
X Ray ◽  
Magnetic Metal ◽  
Polymeric Complexes

ABSTRACTManganese bis(hexafluoroacetylacetonate), Mn(hfac)2, reacts with a series of bisnitroxide radicals, 5- R- 1,3- bis(N- oxy- tert- butylamino)benzene 1R (R = H, Cl, and Br), to give 1:1 polymeric complexes of formula [Mn(hfac)2·1R]n. The X- ray crystal structure of the 1H complex reveals that it crystallizes in the monoclinic system, space group P21/n, with a= 9.212(3) Å, b= 16.620(3) Å, c= 20.088(2) Å, β= 98.46(1)°, V= 3042(1)Å3, and Z= 4. The manganese(II) ion and 1H molecule makes onedimensional chains by ligation of the latter serving as a bis(monodentate) ligand to the former. The crystals of the 1H complex undergo transition to a metamagnet at 5.5 K. Similar 1cl and 1Br complexes behave as ferrimagnets with transition temperatures of 5.2 and 5.0 K, respectively.

The molecular structure of high-spin (S = {\bf 5} \over {\bf 2}) manganese(II) phthalocyanine in tetrabutylammonium bromido(phthalocyaninato)manganese(II)

2014 ◽  
Vol 70 (5) ◽  
pp. 449-451 ◽  
Author(s):  
Dmitri V. Konarev ◽  
Alexey V. Kuzmin ◽  
Salavat S. Khasanov ◽  
Rimma N. Lyubovskaya
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Bond Length ◽  
Single Crystals ◽  
High Spin ◽  
Complex Salt ◽  
Title Complex ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diffusion Technique

The title complex salt, (C16H36N)[MnBr(C32H16N8)] or (TBA)[MnIIBr(Pc)] (TBA is tetrabutylammonium and Pc is phthalocyaninate), has been obtained as single crystals by the diffusion technique and its crystal structure was determined using X-ray diffraction. The high-spin (S = 5\over 2) [MnIIBr(Pc)]− macrocycle has a concave conformation, with an average equatorial Mn—N(Pc) bond length of 2.1187 (19) Å, an axial Mn—Br bond length of 2.5493 (7) Å and with the MnII cation displaced out of the 24-atom Pc plane by 0.894 (2) Å. The geometry of the MnIIN4 fragment in [MnIIBr(Pc)]− is similar to that of the high-spin (S = 5\over 2) manganese(II) tetraphenylporphyrin (TPP) in [MnII(1-MeIm)(TPP)] (1-MeIm is 1-methylimidazole).

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