trans-Bis(triphenylphosphine)phthalocyanato (2-)rhenium(II) reacts with ((Bu4N)-Bu-n)F . 3H(2)O in acetone on air yielding trans-di(fluoro)phthalocyaninato(2-)rhenate(III), (trans)[Re(F)(2)pc(2-)](-). The complex anion is precipitated as tetra(n-butyl)ammonium ((Bu4N)-Bu-n), or after addition of (PNP)HSO4 as linear-bis(triphenylphosphine)iminium ((l)(PNP)) salt. The latter crystallizes as a double salt of formula (l)(PNP)(trans)[Re(F)(2)pc(2-)]. 0.33(l)(PNP)F . 2H(2)O in the cubic space group I23 (no.197) with the cell parameter a = 21.836(2) Angstrom; V = 10412(2) Angstrom(3); Z = 6. The Re atom is located in the centre of the (N-iso)(4) plane (N-iso: isoindole-N atom) and coordinates axially two fluorine atoms in a mutual trans position. The Re-N and Re-F distance is 2.035(6) and 1.798(7) Angstrom, respectively. According to the short Re-F distance the asymmetric Re-F stretching vibration is observed in the MIR spectrum at 746 cm(-1). Obviously due to a large spin-orbit coupling, the complex salt with an electronic low-spin d(4) ground state of Re-III (S = 1) is diamagnetic. Hence a sharp signal is observed at -126.1 ppm in the (FNMR)-F-19 spectrum. The UV-VIS-NIR spectrum shows the typical pi-pi* transitions at 15000 (B), 29500 (Q) and 36900 cm(-1) (N) and trip-multiplet transitions at 9500/10500 cm(-1) and 13200/14100 cm(-1).