Recently, oriented carbon nanotubes, and nanowires of semiconductors, oxides, and metals have attracted wide attention. However, there have been few reports on the direct growth of oriented polymer nanostructures such as oriented polymer nanowires. Oriented conducting polymer nanostructures will be very useful for many applications, [1±3] which range from chemical and biological sensing and diagnosis to energy conversion and storage (photovoltaic cells, batteries and capacitors, and hydrogen-storage devices), light-emitting display devices, catalysis, drug delivery, separation, microelectronics, and optical storage.Several methods, which include electrospinning [4, 5] and polymer-templated electrochemical synthesis, [6] have been used for preparing conducting polymer nanofibers. Highly porous, conducting polymer films based on techniques such as dip coating on porous supports have been widely investigated for separation and sensing, [7] but the random pore structures and misalignment of the polymers are not ideal for high efficiency and faster kinetics. Controlled orientation is more critical for applications such as in light-emitting and micro-COMMUNICATIONS (44) [M þ ÀthfÀC 6 Cl 4 O 2 ], 446 (100) [MH þ ÀthfÀC 6 Cl 4 O 2 ÀC 7 H 12 ]; elemental analysis calcd for C 30 H 28 Cl 8 O 5 Pd (858.58): C 41.97, H 3.29; found: C 42.27, H 3.43. 5: The diethyl ether complex 4 a (86.1 mg, 0.10 mmol) was dissolved in dry degassed pyridine (1 mL) and stirred at room temperature for 30 min. The solution was filtered through a glass frit and the filtrate was diluted with dry degassed pentane (30 mL) before being cooled overnight at about À15 8C. The obtained brown crystals were collected on a glass frit and dried under vacuum at room temperature for 48 h. The yield was 76.7 mg (75.6 %): m.p. 99.2±99.5 8C (decomp); 1 H NMR (300 MHz, CDCl 3 ): d ¼ 1.16±1.32 (m, 1 H), 1.34±1.46 (m, 1 H), 1.54±1.80 (m, 3 H), 2.71 (d, J ¼ 3.8 Hz, 1 H), 2.75 (d, J ¼ 3.8 Hz, 1 H), 3.00 (d, J ¼ 10.2 Hz, 1 H), 4.03 (s, 2 H), 7.25 (dd, J ¼ 7.8, 4.2 Hz, 4 H), 7.67 (tt, J ¼ 7.8, 1.5 Hz, 1 H), 8.51 ppm (d, J ¼ 4.2 Hz, 4 H); MS (FAB) m/z (%) 541 (34) [M þ À3 PyÀC 6 Cl 4 O 2 ], 446 (100) [MH þ À3 PyÀC 6-Cl 4 O 2 ÀC 7 H 12 ]; elemental analysis calcd (%) for C 41 H 35 Cl [10] Crystallographic data: Intensity data were collected at 173 K on a Bruker SMART APEX diffractometer with Mo Ka radiation (0.71073 ä) and graphite monochrometer. The absorption correction was made using SADABS. The structure was solved by direct methods and refined by the full-matrix least-squares on F 2 (SHELXTL). 4 b: C 30 H 28 Cl 8 O 5 Pd, M r ¼ 858.58, space group P2(1)/n (no. 14), monoclinic, a ¼ 10.0282(7), b ¼ 21.2453(15), c ¼ 15.1970(11) ä, b ¼ 90.171(2)8, V ¼ 3237.7(4) ä 3 ; Z ¼ 4, 1 calcd ¼ 1.761 g cm À3 ; a total of 24 938 reflections were measured and 8652 were independent [R(int) ¼ 0.0245]. Final R 1 ¼ 0.0275, wR 2 ¼ 0.0725 [I > 2s(I)], and GOF ¼ 0.743 (for all data, R 1 ¼ 0.0329, wR 2 ¼ 0.0778). 5: C 41 H 35
