1. Organo Lanthanide Metal Complexes for Electroluminescent Materials
2. Lanthanide-Containing Molecular and Supramolecular Polymetallic Functional Assemblies
3. 1 and 2.2,4-Diamino-6-hydroxy pyrimidine (L) (0.5 g, 3.96 mmol) was added to MeOH (25 mL) to give a cream solution. Upon addition of hydrated terbium chloride (1, 0.74 g, 1.98 mmol) or hydrated europium chloride (2, 0.74 g, 1.98 mmol), the solution changed to a clear yellow solution that was stirred for 24 h. The reaction in a 2:1 ratio afforded complexes1and2in high yields (1, 1.12 g, 90.4%;2, 1.03 g, 81.6%). Single, medium yellow crystals of the terbium complex suitable for X-ray study and microanalysis were obtained by slow evaporation from methanol.1: Anal. Found: C, 15.38; H, 3.85; N, 17.89. Calcd for [Tb(C4N4H6O)2(H2O)6]Cl3: C, 15.35; H, 3.84; N, 17.91. IR (KBr, cm-1): 3446, 3331, 1642, 1485, 1465, 1351, 1309, 1257, 994, 800, 755, 688. ESI-MSm/z: 625.5 [M], 519 [M − 3Cl], 411 [M − 3Cl − 6H2O].2: Anal. Found: C, 15.57; H, 3.88; N, 18.12. Calcd for [Eu(C4N4H6O)2(H2O)6]Cl3: C, 15.53; H, 3.91; N, 18.11; IR (KBr, cm-1): 3447, 3330, 1640, 1484, 1464, 1350, 1309, 1256, 994, 801, 687. ESI-MSm/z: 618.5 [M], 512 [M − 3Cl], 404 [M − 3Cl − 6H2O).3 and 4.L(0.5 g, 3.96 mmol) was added to MeOH (25 mL) to give a cream solution. Upon addition of the hydrated terbium nitrate (3, 0.90 g, 1.98 mmol) or hydrated europium nitrate (4, 0.88 g, 1.98 mmol), the solution changed to a clear solution. The resulting solution was stirred for 24 h. The reaction in a 2:1 ratio afforded complexes3and4in high yields (3, 0.98 g, 76.0%;4, 1.16 g, 91.0%). Single, medium yellow crystals of the europium complex suitable for X-ray study and microanalysis were obtained by slow evaporation from methanol.3: Anal. Found: C, 14.76; H, 2.75; N, 23.65. Calcd for [Tb(C4N4H6O)2(H2O)3(NO3)3]: C, 14.75; H, 2.79; N, 23.66. IR (KBr, cm-1): 3442, 3353, 1642, 1384. ESI-MSm/z: 651 [M], 597 [M − 3H2O], 535 [M − 3H2O − NO3], 473 [M − 3H2O − 2NO3], 411 [M − 3H2O − 3NO3].4: Anal. Found: C, 14.91; H, 2.83; N, 23.92. Calcd for [Eu(C4N4H6O)2(H2O)3(NO3)3]: C, 14.91; H, 2.82; N, 23.91. IR (KBr, cm-1): 3442, 3353, 1642, 1479, 1465, 1384, 1256. ESI-MSm/z: 644 [M], 590 [M − 3H2O], 528 [M − 3H2O − NO3], 467 [M − 3H2O − 2NO3], 404 [M − 3H2O − 3NO3].L: IR (KBr, cm-1): 3431, 3353, 3240, 3168, 1653, 1497, 1467, 1376, 1303, 1249, 983, 783.
4. Crystal data for1: [Tb(C4N4H6O)2(H2O)6]Cl3,M= 625.61, triclinic,P1̄ (No. 2),a= 9.084(5) Å,b= 10.772(8) Å,c= 12.959 (8) Å,V= 3775(1) Å3,T= 298 K,Z= 2, μ(Mo Kα) = 55.224 cm-1, 26 158 reflections measured, 5130 unique (Rint= 0.048), 4829 observed reflections [I> 2σ(I)] were used in all calculations.FtoR= 0.032,Rw= 0.038. CCDC 242 135. Crystal data for4: [Eu(C4N4H6O)2(H2O)3(NO3)3],M= 644.26, triclinic,P1̄ (No. 2),a= 6.814(2) Å,b= 10.659(3) Å,c= 16.074 (5) Å,V= 1105.6 Å3,T= 298 K,Z= 2, μ(Mo Kα) = 55.224 cm-1, 26 158 reflections measured, 5130 unique (Rint= 0.048), 4829 observed reflections [I> 2σ(I)] were used in all calculations.FtoR= 0.019,Rw= 0.024. CCDC 251900.
5. Thiouracil Antithyroid Drugs as a New Class of Neuronal Nitric Oxide Synthase Inhibitors