Hafnium(IV) complexes with Schiff bases

Spectral and thermal features of some novel iron(III) chelates with substituted 2-hydroxyaryloximes

“…This is also inferred from the positive shift of about 10 cm -I in the v(C-O) band, which for the studied complexes was found at 1295 cm -1 [24]. In the far-IR spectra of the iron complexes, the stretching vibration of the Fe-N bond was observed at 565 cm -I while that of the Fe-O bond could not be assigned with certainty.…”

Metal Salen- and Salphen-Containing Organic Polymers: Synthesis and Applications

“…Fe 2þ , 28 Fe 3þ , 29 Co 2þ , 30 Co 3þ , 31 Ni 2þ , 32 Cu 2þ , 33 Zn 2þ , 34 Ga 3þ , 35 Ge 2þ/4þ , 36 Sr 2þ , 23 Y 3þ , 37 Zr 4þ , 38 Nb 5þ , 39 Mo 4þ , 40 Tc 5þ , 41 Ru 3þ , 42 Rh 3þ , 43 Pd 2þ , 44 Ag þ , 45 Cd 2þ , 46 Sb 5þ , 47 Te 4þ , 48 La 3þ , 37 Ce 4þ , 49 Pr 3þ , 50 Nd 3þ , 51 Sm 3þ , 51 EU 3þ , 52 Gd 3þ , 51 Tb 3þ , 51 Dy 3þ , 51 Ho 3þ , 53 Er 3þ , 51 Tm 3þ , 53 Yb 3þ , 53 Lu 3þ , 53 Hf 4þ , 54 Ta 5þ , 55 W 6þ , 56 Re 4þ , 57 Os 4þ , 58 Ir 3þ , 59 Pt 2þ , 60 Au 3þ , 61 Hg 2þ , 46 Tl 3þ , 62 Bi 3þ , 63 Th 4þ , 64 U 6þ , 65 Np 5þ , 66 or Pu 4þ . 49 In contrast to metal salens, for which comparably simple chiral diamines ...…”