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subst.), 738, 699 (arom. mono-subst.). H NMR (acetone-d6) (d) (m,4H,37), 7.90 (m,6H,2,5,6), 10.16 (s,2H,34). 13C NMR (DMSO-
(ppm): 0.75 (s,6H,11), 0.83 (s,6H,29), 1.03 (s,6H,23), 1.09 d6) (d) (ppm): ꢁ4.07 (CH3,11), 34.6 (CH2,17), 55.4 (9), 120.2 (36),
(m,2H,22), 1.49 (m,2H,28), 2.71 (m,2H,28), 4.67 (d,2H,9), 7.53 123.0 (5), 126.9 (21), 128.5 (14), 128.5 (41), 128.6 (5), 128.6 (20),
(m,18H,36,37,40,41,42), 7.93 (s,2H,6), 8.09 (s,4H,2,5), 10.91 128.8 (15), 129.2 (19), 131.1 (38), 132.9 (3), 133.2 (12), 134.4 (4),
(s,2H,34). 13C NMR (acetone-d6) (d) (ppm): ꢁ3.43 (11), 10.7 (29), 135.2 (42), 135.4 (13), 136.2 (37), 136.2 (39), 136.8 (40), 137.8
16.3 (23), 25.2 (28), 33.2 (23), 58.9 (9), 119.4 (35), 122.5 (5), 127.7 (18), 140.3 (35), 141.6 (6), 143.7 (1), 167.2 (10), 167.7, 167.9 (7,8).
(2), 128.0 (41), 130.5 (38), 132.2 (3), 134.0 (4), 134.5 (42), 135.7 29Si NMR (DMSO-d6) (d) (ppm): ꢁ8.50 (43), ꢁ15.25 (44).
(37), 135.7 (39), 136.3 (40), 140.0 (35), 140.2 (6), 145.5 (1), 167.0
PIA-II-d. (C56H50Si2N4O5)n. IR (KBr) (n) (cmꢁ1): 3330 (N–H),
(10), 167.7, 167.9 (7,8). 29Si NMR (acetone-d6) (d) (ppm): ꢁ4.63 3067, 3047, 3022 (C–H arom.), 2964, 2932, 2873 (C–H aliph.),
(43), ꢁ15.43 (44).
1773, 1715 (C]O), 1590, 1516 (C]C arom.), 1443, 1372 (C–H
PIA-I-g. (C55H40Si2N4O5)n. IR (KBr) (n) (cmꢁ1): 3431 (N–H), aliph.), 1284 (Si–CH3), 1428, 1109 (Si–C6H5), 823 (arom. p-
3067, 3048 (C–H arom.), 2924 (C–H aliph.), 1776, 1719, 1663 subst.), 737, 700 (arom. mono-subst.). 1H NMR (DMSO-d6) (d)
(C]O), 1589, 1507 (C]C arom.), 1440 (C–H aliph.), 1282 (ppm): 0.88 (s,3H,11), 1.06 (d,12H,23,24), 2.85 (m,2H,22), 4.60
(Si–CH3), 1427, 1111 (Si–C6H5), 833 (arom. p-subst.), 738, 701 (s,2H,9), 7.53 (m,23H,13,14,15,36,40,41,42), 8.00 (m,6H,2,5,6),
(arom. mono-subst.). 1H NMR (DMSO-d6) (d) (ppm): 0.80 10.12 (s,2H,34). 13C NMR (DMSO-d6) (d) (ppm): ꢁ4.39 (11), 19.2
(s,6H,11), 7.80 (m,32H,2,5,6,31,32,36,37,40,41,42), 10.52 (23), 20.4 (24), 27.5 (22), 59.4 (9), 119.4 (36), 122.7 (5), 127.7 (14),
(s,2H,34). 13C NMR (DMSO-d6) (d) (ppm): ꢁ3.4 (11), 119.7 (36), 128.0 (41), 128.4 (2), 128.8 (15), 130.7 (38), 132.6 (3), 132.9 (12),
120.2 (33), 122.7 (5), 126.8 (31), 128.0 (41), 128.2 (32), 128.5 (2), 134.0 (4), 134.5 (42), 134.9 (13), 135.7 (37), 135.7 (39), 136.3 (40),
130.7 (38), 132.4 (3), 134.0 (4), 134.2 (30), 134.4 (42), 135.7 (37), 140.1 (35), 141.1 (6), 143.2 (1), 166.7 (10), 167.6, 167.8 (7,8). 29Si
135.7 (39), 136.3 (40), 140.2 (35), 140.5 (6), 145.6 (1), 165.1 (10), NMR (DMSO-d6) (d) (ppm): ꢁ8.91 (43), ꢁ15.39 (44).
166.6, 166.8 (7,8). 29Si NMR (DMSO-d6) (d) (ppm): ꢁ4.63 (43),
ꢁ15.43 (44).
PIA-II-e. (C58H54Si2N4O5)n. IR (KBr) (n) (cmꢁ1): 3386 (N–H),
3066, 3046, 3026 (C–H arom.), 2923 (C–H aliph.), 1775, 1718
(C]O), 1588, 1511 (C]C arom.), 1455, 1428 (C–H aliph.), 1240
(Si–CH3), 1428, 1108 (Si–C6H5), 822 (arom. p-subst), 739, 700
(arom. mono-subst.). 1H NMR (DMSO-d6) (d) (ppm): 0.89
Series II (R1 ¼ Me, R2 ¼ C6H5)
PIA-II-a. (C50H38Si2N4O5)n. IR (KBr) (n) (cmꢁ1): 3386 (N–H), (s,6H,26), 0.93 (s,6H,27), 1.08 (s,3H,11), 1.47 (m,2H,25),
3068, 3046, 3022 (C–H arom.), 2930 (C–H aliph.), 1777, 1719 2.01 (t,2H,17), 2.26 (t,2H,170), 4.96 (d,2H,9), 7.55
(C]O), 1590, 1517 (C]C arom.), 1426, 1390 (C–H aliph.), 1243 (m,23H,13,14,15,36,40,41,42), 8.02 (m,6H,2,5,6), 10.09 (s,2H,34).
(Si–CH3), 1426, 1109 (Si–C6H5), 822 (arom. p-subst.), 734, 700 13C NMR (DMSO-d6) (d) (ppm): ꢁ4.1 (11), 21.1 (26), 23.5 (27), 25.0
(arom. mono-subst.). 1H NMR (DMSO-d6) (d) (ppm): 1.08 (25), 37.2 (17), 52.5 (9), 120.0 (36), 123.0 (5), 128.2 (14), 128.3 (41),
(s,3H,11), 4.51 (s,4H,9), 7.57 (m,23H,13,14,15,36,37,40,41,42), 128.7 (2), 128.8 (15), 131.2 (38), 133.1 (3), 133.2 (12), 134.2 (4),
8.02 (m,6H,2,5,6), 10.52 (s,2H,34). 13C NMR (DMSO-d6) (d) 135.0 (42), 135.3 (13), 136.0 (37), 136.0 (39), 136.6 (40), 140.4 (35),
(ppm): ꢁ4.4 (11), 40.8 (9), 118.8 (37), 122.7 (5), 127.7 (14), 128.0 141.5 (6), 143.6 (1), 167.8 (10), 167.9, 168.1 (7,8). 29Si NMR
(41), 128.4 (2), 128.8 (15), 130.9 (38), 132.8 (3), 132.9 (12), 133.8 (DMSO-d6) (d) (ppm): ꢁ8.90 (43), ꢁ15.39 (44).
(4), 134.4 (42), 135.0 (13), 135.7 (37), 135.7 (39), 136.5 (40), 139.9
(35), 141.1 (6), 143.3 (1), 164.9 (10), 167.3, 167.5 (7,8). 29Si NMR 3067, 3047, 3022 (C–H arom.), 2964, 2931, 2876 (C–H aliph.), 1774,
1715 (C]O), 1590, 1512 (C]C arom.), 1462, 1443, 1360 (C–H
PIA-II-f. (C58H54Si2N4O5)n. IR (KBr) (n) (cmꢁ1): 3331 (N–H),
(DMSO-d6) (d) (ppm): ꢁ8.91 (43), ꢁ15.39 (44).
PIA-II-b. (C52H42Si2N4O5)n. IR (KBr) (n) (cmꢁ1): 3367 (N–H), aliph.), 1280 (Si–CH3), 1428, 1109 (Si–C6H5), 822 (arom. p-subst.),
3067, 3046, 3021 (C–H arom.), 2998, 2979, 2939 (C–H aliph.), 737, 700 (arom. mono-subst.). 1H NMR (DMSO-d6) (d) (ppm): 0.85
1774, 1717 (C]O), 1589, 1512 (C]C arom.), 1443, 1427 (C–H (s,3H,11), 0.92 (m,2H,28), 1.04 (m,12H,23,29), 1.51 (m,2H,28),
aliph.), 1428, 1109 (Si–C6H5), 822 (arom. p-subst.), 740, 700 2.73 (m,2H,22), 4.69 (d,2H,9), 7.55 (m,23H,13,14,15,36,40,41,42),
(arom. mono-subst.). 1H NMR (DMSO-d6) (d) (ppm): 1.06 8.00 (m,6H,2,5,6), 10.22 (s,2H,34). 13C NMR (DMSO-d6) (d) (ppm):
(s,3H,11), 1.61 (d,6H,16), 4.97 (q,2H,9), 7.59 (m,23H,13– ꢁ4.90 (11), 10.7 (29), 16.2 (23), 25.2 (28), 33.2 (22), 59.0 (9), 119.3
15,36,37,40,41,42), 7.98 (m,6H,2,5,6), 10.02 (s,2H,34). 13C NMR (36), 122.7 (5), 127.7 (14), 128.0 (41), 128.4 (2), 128.8 (15), 130.6
(DMSO-d6) (d) (ppm): ꢁ4.4 (11), 15.0 (16), 48.9 (9), 119.5 (36), (38), 132.5 (3), 132.9 (12), 134.0 (4), 134.5 (42), 135.0 (13), 135.7
122.6 (5), 127.6 (14), 128.0 (41), 128.4 (5), 128.6 (15), 131.2 (38), (37), 135.7 (39), 136.4 (40), 140.0 (35), 141.2 (6), 143.3 (1), 167.0
132.9 (3), 133.1 (12), 134.0 (4), 134.5 (42), 134.9 (13), 135.7 (37), (10), 167.7, 167.9 (7,8). 29Si NMR (DMSO-d6) (d) (ppm): ꢁ8.91 (43),
135.7 (39), 136.3 (40), 140.1 (35), 140.9 (6), 143.0 (1), 167.2 (10), ꢁ15.39 (44).
167.4, 167.7 (7,8). 29Si NMR (DMSO-d6) (d) (ppm): ꢁ8.21 (43),
ꢁ15.19 (44).
PIA-II-g. (C60H42Si2N4O5)n. IR (KBr) (n) (cmꢁ1): 3420 (N–H),
3067, 3047, 3022 (C–H arom.), 2960 (C–H aliph.), 1777, 1720,
PIA-II-c. (C64H50Si2N4O5)n. IR (KBr) (n) (cmꢁ1): 3378 (N–H), 1674 (C]O), 1588, 1560 (C]C arom.), 1439 (C–H aliph), 1281
3066, 3046, 3026 (C–H arom.), 2957, 2905 (C–H aliph.), 1774, (Si–CH3), 1428, 1111 (Si–C6H5), 824 (arom. p-subst.), 735, 700
1718 (C]O), 1589, 1511 (C]C arom.), 1454, 1428 (C–H aliph.), (arom. mono-subst.). 1H NMR (DMSO-d6) (d) (ppm): 1.11
1241 (Si–CH3), 1428, 1108 (Si–C6H5), 821 (arom. p-subst.), 739, (s,3H,11), 7.77 (m,37H,2,5,6,13,14,15,31,32,36,40,41,42), 10.52
700 (arom. mono-subst.). 1H NMR (DMSO-d6) (d) (ppm): 1.02 (s,2H,34). 13C NMR (DMSO-d6) (d) (ppm): ꢁ3.9 (11), 120.2 (36),
(s,3H,11), 3.41 (d,2H,17), 3.64 (d,2H,170), 5.26 (q,2H,9), 7.19 123.4 (5), 127.4 (31), 128.1 (14), 128.5 (32), 128.7 (41), 128.9 (2),
(m,5H,13,14,15), 7.46 (m,24H,19,10,21,36,40,41,42), 7.69 129.0 (15), 131.4 (13), 133.3 (3), 133.4 (12), 134.4 (4), 134.7 (33),
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RSC Adv., 2014, 4, 30197–30210 | 30203