Stoichiometry, Mössbauer spectrum, and magnetic susceptibility of the one‐dimensional conductor iridium carbonyl chloride

1974 ◽  
Vol 60 (7) ◽  
pp. 2657-2663 ◽  
Author(s):  
A. P. Ginsberg ◽  
R. L. Cohen ◽  
F. J. DiSalvo ◽  
K. W. West
1993 ◽  
Vol 88 (2) ◽  
pp. 157-160
Author(s):  
C.Roy Chowdhury (née Bandyopadhyay) ◽  
T. Sarkar (née Kundu) ◽  
D. Ghosh

1996 ◽  
Vol 453 ◽  
Author(s):  
H.-C. Zur Loye ◽  
P. Núñez ◽  
M. A. Rzeznik

AbstractThe one-dimensional compounds Sr3MgPtO6, Sr3MgIrO6, Sr3MgRhO6, Sr3GdRhO6, have been synthesized and structurally characterized by Rietveld refinement of powder X-ray diffraction data. All four compounds are isostructural with the rhombohedral K4CdCl6-type structure. The structure consists of infinite one-dimensional chains of alternating face-shared MO6 octahedra (M = Pt, Ir, Rh) and M′O6 (M′ = Gd, Mg) trigonal prisms. The strontium cations are located in a distorted square antiprismatic environment. Magnetic susceptibility data show that both Sr3MgIrO6 and Sr3MgRhO6 obey the Curie-Weiss law with θ = −6(1) K, and θ= −15(3)K, respectively. Sr3GdRhO6 obeys the Curie law with μeff = 7.80 B.M, consistent with an oxidation state of +3 for both rhodium and gadolinium.


2004 ◽  
Vol 68 (6) ◽  
pp. 853-858
Author(s):  
J. J. Reece ◽  
S. A. T. Redfern

AbstractThe magnetic susceptibility of ordered and partially disordered manganogrunerites (composition and ) has been measured between room temperature and 5 K. The influence of disordering of metal cations over the M(1,2,3) sites of the octahedral ribbon in these amphiboles is to dilute Fe2+ within the ribbon. We observe a reduction in both θp and TN as a function of both increased Mg/(Mg+Fe) and metal cation disorder, linked to a reduction in the strength of magnetic coupling between and within the one-dimensional chains of the structure.


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