SYNTHESIS, SPECTROSCOPY, AND STRUCTURAL CHARACTERIZATION OF 6-COORDINATE BIS(ARYLDIAZENIDO)RHENIUM AND BIS(DIARYLHYDRAZIDO)RHENIUM COMPLEXES - X-RAY STRUCTURES OF (ET(4)N)[RE(NNPH)(2)(O2C6H4)(2)], (ET(4)N)[RE(NNPH(2))(2)(O2C6H4)2], AND NA[RE(NNPH)(2)(O2C6H4)2]CENTER-DOT-CH3CN

The reactions of the cis-dioxorhenium(VII)-catecholate complex [(CH3CH 2)(4)N][ReO2(O2C6H4)(2)] (1) With either monosubstituted organohydrazi nes (C6H5NHNH2; 4-BrC6H4NHNH2) or 1,1-disubstituted organohydrazines ( Ph(2)-NNH2) yield the cis-bis(diazenido) core complexes [(CH3CH2)(4)N] [Re(NNR)(2)(O2C6H4)(2)] (5, R = C6H5; 6, R = 4-BrC6H4) and the cis-bis (hydrazido) core species [(CH3CH2)(4)N][Re(NNPh(2))(2)(O(2)C36H(4))(2) ] (7) Elution of 5 in a 3:1 mixture of toluene/methanol on a column of silica gel resulted in cation exchange to give Na[Re(NNPh)(2)-(O2C6H4 )(2)].CH3CN (8) as a one-dimensional polymer {[Na(CH3CN)](+)[Re(NNPh)( 2)(O2C6H4)(2)](-)}(2). Crystal data for C32H38N5O4Re (5): P2(1)/c, a = 14.458(3) Angstrom, b = 10.436(2) Angstrom, c = 21.767(4) Angstrom, b eta = 107.04(3)degrees, V = 3140(2) Angstrom(3), Z = 4, D-calc = 1.572 g cm(-3); structure solution and refinement based on 3256 reflections with I-0 greater than or equal to 3 sigma(I-0) converged at R = 0.053 . Crystal data for C44H48N5O4Re (7): P ($) over bar 1, a = 11.660(2) A ngstrom, b = 11.864(2) Angstrom, c = 15.400(2) Angstrom, alpha = 107.1 2(3)degrees, beta = 94.99(3)degrees, gamma = 97.61(3)degrees, V = 2000 (1) Angstrom(3), Z = 2, D-calc = 1.490 g cm(-3); 3702 reflections, R = 0.0534. Crystal data for C26H18N5NaO(4)Re (8): P2/n, a = 5.785(1) Ang strom, b = 9.670)2) Angstrom, c = 23.142(5) Angstrom, beta = 90.91(3)d egrees, V = 1294.4(7) Angstrom(3), Z = 2, D-calc = 1.737 g cm(-3); 151 7 reflections, R = 0.049.