CRYSTAL-STRUCTURE AND TRANSPORT-PROPERTIES OF A HYDROGEN-BONDED 1 1 CHARGE-TRANSFER COMPLEX COMPOSED OF 1,6-PYRENEDIAMINE AND 7,7,8,8-TETRACYANOQUINODIMETHANE (DAP-TCNQ)/

Single crystals of a hydrogen-bonded 1:1 charge-transfer complex, DAP - TCNQ, have been prepared by co-sublimation of components. In spite o f its low electrical resistivity, the temperature dependence is semico nducting with anomalously high activation energy over a wide temperatu re range. The crystal is composed of two kinds of one-dimensional colu mns each of which is composed of donors or acceptors. Donors and accep tors are respectively stacked with an equal separation. No indication of lattice deformation such as dimerization has been detected down to 118 K by an X-ray diffraction technique. The structural study also ind icates that donors and acceptors are interacted two-dimensionally thro ugh hydrogen bonds formed between the amino groups of DAP and the cyan o groups of TCNQ.