Fuji Xerox Co., Ltd.

Other

Mitsubishi Oil Co., Ltd.

Toshio Mukai

Tsutomu Miyashi

Takanori Suzuki

Yoshiro Yamashita

Katsumi Nukada

Hiroyuki Tanaka

Katsuhiro Sato

Yutaka Akasaki

Naoya Yabuuchi

Hiroshi Fujii

A charge transfer complex formed between a benzoquinone derivative represented by formula ##STR1## wherein at least one of the rings A and B represents a heterocyclic ring as defined in the specification, and an electron donor, and a salt of an anion or anion radical of the benzoquinone derivative of the above formula are disclosed. The charge transfer complex and the salt are useful as electronic materials.

Charge transfer complex formed between benzoquinone derivative and

A process for separating 2,6-dimethylnaphthalene form a 2,6-dimethylnaphthalene-containing mixture which comprises mixing said mixture with 2,4,7-trinitro-9-fluorenone to thereby form a complex, separating a solid matter containing said complex and decomposing the solid matter containing the same to thereby separate and collect an oil rich in the 2,6-dimethylnaphthalene. According to this process, 2,6-dimethylnaphthalene can be readily separated at a high selectivity. Further, the 2,4,7-trinitro-9-fluorenone can be readily recovered and reused as such.

Process for separating 2,6-dimethylnaphthalene

A novel tetracyanoanthraquinodimethane derivative and a process for producing it are disclosed, the tetracyanoanthraquinodimethane derivative being represented by formula: ##STR1## wherein R, m, and n are as defined in the specification. A solid charge transfer complex of the tetracyanoanthraquinodimethane derivative with an electron donating compound and a process for producing it are also disclosed.

Novel tetracyanoanthraquinodimethane derivatives and process for

A process for separating 2,6-dimethylnaphthalene from a 2,6-dimethylnaphthalene-containing mixture which comprises mixing said mixture with a complexing agent selected from the group consisting of bis(1,2,5)thiaziazolotetracyanoquinodimethane, (1,2,5)selenadiazotetrocyanonaphthoquinodimethane, (1,2,5)thiaziazolotetracyanonaphthoquinodimethane, 2,6-dichlorotetracyanoanthraquinodimethene, and 2,6-diiodotetracyanoanthraquinodimethane to thereby form a complex, separating a solid matter containing said complex; and decomposing the solid matter containing the same to thereby separate and collect an oil rich in the 2,6-dimethylnaphthalene. According to this process, 2,6-dimethylnaphthalene can be readily separated at a high selectivity. Further the complexing agent can be readily recovered and reused as such.

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Miyagi, Japan

Takanori Suzuki