“…Yield: 3.83 g (48%); mp 72−74 °C; Raman (80 mW, in cm −1 ) ν: 3083 (16), 2983 (26), 2937 (52), 2929 (53), 2873 (18), 1598 (100), 1570 (13), 1527 (15), 1494 (20), 1450 (23), 1427 (14), 1415 (13), 1402 (19), 1369 (21), 1344 (21), 1313 (14), 1284 (13), 1178 (13), 1095 (25), 1053 (24), 837 (17), 671 (22), 73 (56); IR (ATR, in cm −1 ) ν: 2980 (vw), 2933 (vw), 2877 (vw), 1597 (vw), 1587 (vw), 1562 (w), 1520 (w), 1493 (m), 1468 (w), 1450 (vw), 1414 (w), 1387 (w), 1375 (w), 1336 (w), 1282 (vw), 1269 (vw), 1242 (vw), 1178 (w), 1153 (m), 1101 (w), 1053 (vw), 978 (vs), 937 (w), 899 (w), 887 (w), 850 (vw), 829 (m), 775 (m), 748 (m), 704 (vw), 669 (m), 646 (w), 629 (vw), 607 (w), 575 (s), 530 (w), 519 (w), 503 (w), 422 (w); 1 H NMR (CDCl 3 , 300 K, in ppm): δ 1.28 (6H, d, 3 J HH = 6.2 Hz, H6a), 1.40 (6H, d, 3 J HH = 6.1 Hz, H6b), 2.27 (3H, d, 4 J HP = 0.7 Hz, H4), 4.62 (2H, d sept, 3 J HP = 7.7 Hz, 3 J HH = 6.3 Hz, H5), 7.39 (2H, md, 3 J HH = 9.0 Hz, H9/H10), 7.77 (2H, md, 3 J HH = 9.0 Hz, H9/ H10); 13 4.8. General Procedure for the Syntheses of Lanthanum(III), Europium(III), and Ytterbium(III) Complexes.…”