�n���Q�����h�i�[���Ȃ�V�K����(DIEDO₂)₂M(mnt)₂ (M=Ni,Pt)�̓h�i�[�ɂ������`���ƃA�j�I���X�s���Ԃ̋��������ݍ�p�̋�������n�ł���D�툳�ł͖�100K��SDW�]�ڂƎv����≏�����N�������C�����ƂƂ��ɓ]�ډ��x�͒ቺ��11kbar�ȏ��21K���x�̈��l���Ƃ�D����ɂ��̌n�œ���ꂽ�m�����V���ȃn���Q�����h�i�[�Ƃ���XMEDT (X=Br,I)�������C���C���ݍ�p�Ɠ`�����̋�������n�𓾂鎖�ɂ����������D

New class of halogenated-donor-based salts (DIEDO)₂M(mnt)₂ (M=Ni,Pt) show metallic conductivity and ferromagnetic interaction. These salts have metal-insulator transitions at about 100K. Application of pressure makes the transition temperature lowered and approach T_M-I=21K for P>11kbar. This suggests that the transition is not suppressed because of structural one dimensionality. To develop further halogenated-donor-basedsalts, we synthesized the XMEDT (X=Br,I) and got new salts of XMEDT in which metallic conductivity coexists with magnetic interaction.