Stock material or miscellaneous articles – Circular sheet or circular blank
Patent
1996-05-31
1998-08-04
Evans, Elizabeth
Stock material or miscellaneous articles
Circular sheet or circular blank
428 642, 428 644, 428913, 43027014, 4304951, 430945, 5482622, 5482672, 5482692, B32B 300
Patent
active
057890544
ABSTRACT:
The invention relates to a spin-transition parent compound in powdered form, comprising a network having molecules which are each formed from a complex in which a metallic ion M having an electronic configuration in d5 or in d6 or in d7, is bonded to at least one aminotriazole ligand of the H.sub.2n+1) and n is an integer which is equal to or greater than zero, each molecule also including a sulforganic anion comprising a sulfito radical (SO.sub.3.sup.-), and the network also including at least one water molecule (H.sub.2 O) per molecule of the metallic complex M, said water molecule(s) in the network only being bonded to the aminotriazole ligand by a hydrogen bond.
In this compound, the anion may be, for example, a sulfito-aryl having a benzene radical or a sulfito-aryl derived from a benzene radical, or a sulfito-aryl having a saturated or unsaturated organic chain, an alkyl sulfito-halide or an aryl sulfito-halide.
REFERENCES:
patent: 5418076 (1995-05-01), Shiratori
patent: 5582900 (1996-12-01), Khan et al.
Codjovi Epiphane
Jay Charlotte
Kahn Olivier
Bartlett Ernestine C.
Evans Elizabeth
U.S. Philips Corporation
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