Magnetic substance

Patent metadata

Field	Value
Publication number	US-9469668-B2
Application number	US-201514818907-A
Country	US
Kind code	B2
Filing date	Aug 5, 2015
Priority date	Feb 5, 2013
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

The present disclosure relates to a ferromagnetic substance containing a crystal of a metal complex molecule in which a heterocycle is bonded to metal, the metal of the metal complex molecule is bonded to the metal of another metal complex via oxygen as a electron donor, and the ferromagnetic substance has a ferromagnetic property balanced with stability of crystals based on a metal-electron donor-metal bond angle that is from 130° to 160°. The present disclosure also relates to a drug containing, as a principal component, the crystal of the metal complex molecule.

First claim

We claim:

1. A ferromagnetic substance, comprising a crystal of a metal complex molecule in which a heterocycle is bonded to metal,
wherein:
the metal of the metal complex molecule is bonded to a metal of another metal complex molecule via oxygen as an electron donor;
the metal complex molecule forms a single crystal whose average particle diameter is between 200 nm and 700 nm inclusive; and
the ferromagnetic substance has a ferromagnetic property and crystal stability of the crystal based on a metal-electron donor-metal bond angle that is from 130° to 160°.

2. The ferromagnetic substance according to claim 1 , wherein the electron donor comprises an element with an electron pair that can be donated to a metal atom of the metal complex molecule.

3. The ferromagnetic substance according to claim 1 , wherein two molecules of the metal complex are bonded together via the electron donor by forming a coordinate bond of the metal and the electron donor.

4. The ferromagnetic substance according to claim 1 , wherein the metal complex molecule forms the single crystal whose average particle diameter is between 300 nm to 600 nm inclusive.

5. The ferromagnetic substance according to claim 1 , wherein the bond angle is within the range of 144° to 147°.

6. The ferromagnetic substance according to claim 1 , wherein the metal complex molecule is a metal-salen complex molecule.

7. The ferromagnetic substance according to claim 1 , wherein a distance between the metal and the oxygen is from 1.1 Å to 1.8 Å.

8. The ferromagnetic substance according to claim 6 , wherein the metal-salen complex molecule is a bivalent iron-salen complex molecule.

9. A drug, comprising, as its principal component, a crystal of a metal complex molecule in which a heterocycle is bonded to metal,
wherein:
the metal of the metal complex molecule is bonded to a metal of another metal complex molecule via an electron donor;
the metal complex molecule forms a single crystal whose average particle diameter is between 200 nm and 700 nm inclusive;
the crystal has a ferromagnetic property based on a metal-electron donor-metal bond angle that is from 130° to 160°;
the metal complex molecule is a metal-salen complex molecule;
the electron donor is oxygen;
a distance between the metal and the oxygen is from 1.1 Å to 1.8 Å; and
the drug can be applied to an affected site with an external magnetic field.

Assignees

• Ihi Corp
• Ishikawa Yoshihiro

Inventors

• Ishikawa Yoshihiro
• Eguchi Haruki

Classifications

• C07F15/025 Primary

  without a metal-carbon linkage · CPC title

• Y10T428/2982

  Particulate matter [e.g., sphere, flake, etc.] · CPC title

• H01F1/42

  of organic or organo-metallic materials {, e.g. graphene}(H01F1/44 takes precedence) · CPC title

• C07F15/02 Primary

  Iron compounds · CPC title