[ti(h 2 o) 6 ] 3+
DESCRIPTION
[Ti(H 2 O) 6 ] 3+. SERIE ESPECTROQUÍMICA (LIGANDOS): I - < Br - < S 2- < SCN - < Cl - < NO 3 - < N 3 - < F - < OH - < C 2 O 4 2- < H 2 O < NCS - < CH 3 CN < py < NH 3 < en < bipy < phen < N O 2 - < PPh 3 < CN - < CO LOS Δ o TAMBIÉN DEPENDEN DEL METAL:. EECC. - PowerPoint PPT PresentationTRANSCRIPT
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[Ti(H2O)6]3+
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SERIE ESPECTROQUÍMICA (LIGANDOS):
I- <Br- < S2- < SCN- < Cl- < NO3- < N3
- < F- < OH- < C2O42-< H2O
< NCS- < CH3CN < py < NH3 < en < bipy < phen < NO2- < PPh3 <
CN- < CO
LOS Δo TAMBIÉN DEPENDEN DEL METAL:
q
r
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Oh, alto spin
Td
EECC
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DISTORSIÓN TETRAGONAL (JAHN-TELLER)
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o
xy, xz, yz
x2-y2, z2
Octaédrico
Plano-cuadrado
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2 2
( 1)3m
N gS S
kT
En ausencia de interacciones magnéticas, se puede mostrar que
(ley de Curie)
1
2
2
3eff m
kT
N
(independiente de T)
1
2( 1)eff g S S ó 1
22 ( 1)eff S S
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I-<Br-<Cl-<F-<OH-<C2O42-<H2O<py<NH3<PPh3<CN-<CO
Se esperaría que o es mayor para ligandos con carga (mayor interacción electroestática), pero o
(F-, Cl-, etc.) < Do (H2O, NH3, etc.).
Hace falta describir el enlace
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T.O.M.
INTERACCIÓN
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T.O.M.
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INTERACCIONES DE SIMETRÍA
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INTERACCIONES DE SIMETRÍA
COMPLEJOOCTAÉDRICO
CON DADORES
.Ej: Cl- ELECTRONES
DEL METAL
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INTERACCIONES DE SIMETRÍA
COMPLEJOOCTAÉDRICO
CON ACEPTORES
.Ej: CO, PR3
ELECTRONESDEL METAL