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EFEK TRANS

EFEK TRANS. Ligan – ligan yang menyebabkan gugus yang letaknya trans terhadapnya bersifat labil , dikatakan mempunyai efek trans yang kuat Contoh : . EFEK TRANS. Urutan efek trans berdasarkan hasil penyelidikan :

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EFEK TRANS

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  1. EFEK TRANS Ligan–ligan yang menyebabkangugusyang letaknyatrans terhadapnyabersifatlabil, dikatakanmempunyaiefek trans yang kuat Contoh:

  2. EFEK TRANS • Urutanefek trans berdasarkanhasilpenyelidikan : CN- ~ CO ~C2H4> PH3 ~SH2> NO2- > I- > Br- > Cl- > NH3 ~py > OH- > H2O • Selainefek trans, stabilitasikatanlogam-liganjuga me- megangperanpentingdalamreaksi

  3. Contoh :

  4. PEMBUATAN ISOMER CIS-TRANS • Pada pembuatansenyawa-senyawacis-trans, dapatter- bentuk : - Campuranisomer cisdan trans. Contoh: kompleks kobalt (III)

  5. PEMBUATAN ISOMER CIS-TRANS - Hanyasatuhasil isomer. Contoh : kompleksplatina (II)

  6. PEMBUATAN ISOMER CIS-TRANS • Pemisahanisomer-isomer cisdan trans dalamcampuran : - Kristalisasibertingkat - Kromatografipenukar ion • Menetapkansuatu isomer berbentukcisatau trans : - Reaksikimia - Menentukansifatoptisaktifdari isomer [M(AA)2X2] - Difraksisinar X, spektroskopi, pengukuranmomen dipole

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