Table 3 Elemental analysis and some physical properties of OBH and its complexes
Compound, empirical formula | M.W. (Found, m/e) | Color | M.P. (°C) | Λ (Ohm−1 cm2 mol−1)a | C % Calcd. (Found) | H % Calcd. (Found) | N % Calcd. (Found) | M % Calcd. (Found) |
|---|---|---|---|---|---|---|---|---|
OBH C10H14N4O4 | 254.25 (255.30) | White | 247–249 | 1.76 | 46.66 (47.04) | 5.75 (5.55) | 22.70 (22.34) | – |
[Co(OBH)2Cl]Cl.½EtOH C21H31N8O8.5Cl2Co | 661.395 | Pale brown | >325 | 48.0 | 38.13 (38.13) | 4.72 (4.94) | 16.94 (16.68) | 8.91 (8.63) |
[Zr(OBH)Cl4]·2H2O C10H18N4O6Cl4Zr | 523.33 (523.4) | Pale orange | >325 | 20.10 | 22.95 (22.63) | 3.47 (3.87) | 10.70 (10.79) | 17.70 (17.20) |
[Zn(OBH–H)2] C20H26N8O8Zn | 571.84 | Yellowish white | >325 | 2.62 | 42.09 (42.49) | 4.58 (5.08) | 19.59 (19.39) | |
[VO(OBH–H)2]·H2O C20H26N8O10V | 591.86 | Brown | 293 | 9.74 | 40.58 (39.99) | 4.77 (4.98) | 18.93 (18.28) | 8.45 (7.93) |
[Cu(OBH)2Cl2]·2H2O C20H32N8O10Cl2Cu | 678.99 | Yellowish green | >325 | 22.50 | 35.37 (35.35) | 4.45 (4.58) | 16.50 (16.07) | 9.34 (9.08) |
[Ni2(OBH)Cl4]·H2O·EtOH C20H22N4O6Cl4Ni2 | 577.62 (371.7)b | Reddish brown | >325 | 37.30 | 24.95 (24.53) | 3.84 (4.11) | 9.70 (9.39) | 20.34 (20.54) |
[Pd2(OBH)(H2O)2Cl4]·2H2O C10H22N4O4Cl4Pd2 | 618.18 (620.30) | Brown | >325 | 24.48 | 20.63 (20.96) | 3.81 (4.20) | 9.62 (9.39) |