Co-Ordination Chemistry उपसहसंयोजक रसायन विज्ञान | Chemistry ,Paper-I |Bihar B.Sc | Fifth Semester

Unit

Topics

Hours

1

Introduction:

Molecular or addition compounds, double salts and coordination compounds, coordination sphere, coordination number (C.N.), oxidation state (O.S.) of the central metal atom/ion, ligands and their classification, chelating ligands, chelates and their stability. Werner’s theory of coordination compounds, limitations of Werner’s theory, Effective Atomic Number (EAN) rule, nomenclature of coordination compounds, isomerism in coordination compounds.

ifjp;&

vk.kfod ;k ;ksxkRed ;kSfxd] f}d yo.k vkSj milgla;kstd ;kSfxd] milgla;kstd {ks=] milgla;kstd la[;k (C.N.), dsaæh; èkkrq ijek.kq@vk;u dh v‚Dlhdj.k voLFkk (O.S.)] fyxSaM vkSj mudk oxÊdj.k] dhysfVax fyxSaM] dhysV vkSj mudh fLFkjrkA milgla;kstd ;kSfxdk dk ouZj dk fl)kar] ouZj ds fl)kar dh lhek,¡] çHkkoh ijek.kq Øekad (EAN) fu;e] milgla;kstd ;kSfxdksa dk ukedj.k] milgla;kstd ;kSfxdksa esa leko;orkA

12

2

Valence Bond Theory:

Valence bond theory of complex compounds, different octahedral, square planar and tetrahedral complexes of Cr, Fe, Co, Ni, Cu and Zn, strength of ligands and stability of complexes, outer and inner orbital complexes. Limitations of Valence Bond Theory (VBT)

la;kstdrk ca/k fl)kar&

ladqy ;kSfxdksa dk la;kstdrk ca/k fl)kar Cr, Fe, Co, Ni, Cu vkSj Zn ds fofHkUu v"VQydh;] oxkZdkj leryh; vkSj prq"Qydh; ladqy] fyxSaM dh lkeF;Z vkSj ladqyksa dh fLFkjrk] ckgjh vkSj vkarfjd vkWfcZVy ladqyA la;kstdrk ca/k fl)kar (VBT) dh lhek,¡

12

3

Crystal Field Theory:

Crystal field theory, crystal field splitting of d-orbitals in octahedral, tetrahedral, tetragonal and square-planar complexes, HS and LS complexes, factors affecting the crystal field splitting energy, spectrochemical series, magnetic properties of complexes, colour of the complexes, crystal Field Stabilization Energy (CFSE) and its calculation. Variation of octahedral ionic radii. Crystal structure of spinels.

Jahn-Teller effect and distortion in octahedral and tetrahedral complexes, charge transfer spectra (LMCT) and (MLCT), heat of hydration, lattice energy of bivalent metal ions of transition metals.

fØLVy {ks= fl)kar&

fØLVy {ks= fl)kar] v"VQydh;] prq"Qydh;] prq"dks.kh; vkSj oxkZdkj&leryh; ladqyksa esa d-vkWfCkZVy dk fØLVy {ks= foikVu] HS vkSj LS ladqy] fØLVy {ks= foikVu ÅtkZ dks çHkkfor djus okys dkjd] LisDVªksjklk;fud Js.kh] ladqyksa ds pqacdh; xq.k] ladqyksa dk jax] fØLVy {ks= fLFkjhdj.k ÅtkZ (CFSE) vkSj bldh x.kukA v"VQydh; vk;fud f=T;kvksa esa ifjorZuA fLiuYk dh fØLVy lajpukA

v"VQydh; vkSj prq"Qydh; ladqyksa esa t‚u&Vsyj çHkko vkSj fo—fr] vkos’k LFkkukarj.k LisDVªk (LMCT) vkSj (MLCT), ty;kstu dh Å"ek] laØe.k èkkrqvksa ds f}la;kstd èkkrq vk;uksa dh tkyd ÅtkZA

12

4

Magnetic Properties of Transition Metal Complexes:

Types of magnetic behaviour, methods of determination of magnetic susceptibility, L-S coupling, correlation of the magnetic moment (spin only formula) and effective magnetic moment values, quenching of orbital contribution to magnetic moment, applications of magnetic moment data for 3d series.

laØe.k èkkrq ladqyksa ds pqacdh; xq.k&

pqacdh; O;ogkj ds çdkj] pqacdh; lqxzkfgrk ds Kkr djus dh fof/k;k¡] L-S ;qXeu] pqacdh; vk?kw.kZ ¼dsoy pØ.k lw=½ vkSj çHkkoh pqacdh; vk?kw.kZ ekuksa dk lglacaèk] pqacdh; vk?kw.kZ esa d{kh; ;ksxnku dh 'keu] 3d Js.kh ds fy, pqacdh; vk?kw.kZ MsVk ds vuqç;ksxA

12

Total ¼dqy½

48

1) Preparation of inorganic compounds/complexes.

a) Preparation of potash alum [K₂SO₄.Al₂(SO₄)₃ .24H₂O]

b) Preparation of potassium tris(oxalato) ferrate (III), K₃[Fe(C₂O₄)₃]

c) Preparation of potassium tris(oxalato) chromate (III), K₃ [Cr(C₂O₄)₃]

d) Preparation of hexammine nickel (II) chloride, [Ni(NH₃)₆]Cl₂.

e) Preparation of tetramminecopper(II) sulphate, [Cu(NH₃)₄]SO₄.

f) Preparation of sodium nitropruside,
[Na₂ [Fe(CN)₅(NO)].

2) Complexometric titrations and colorimetry

a) Estimation of copper sulphate/copper ion from a given solution colorimetrically.

b) Estimation of phosphate ion, (PO₄)^3– in a given sample of water/soil colorimetrically.

c) Complexometric titrations by EDTA

i) Estimation of Ca²⁺/ Mg²⁺ in the supplied sample of water.

ii) Estimation of total hardness from the supplied sample of water.

1) vdkcZfud ;kSfxdksa@ladqyksa dh rS;kjhA

a) aiksVk'k fQVdjh [K₂SO₄.Al₂(SO₄)₃.24H₂O] dh rS;kjh

b) iksVSf'k;e fVªl ¼v‚DtsySVks½ QsjsV (III), K₃[Fe(C₂O₄)₃] dh rS;kjh

c) iksVSf'k;e fVªl ¼v‚DtsySVks½ ØksesV (III),

K₃ [Cr(C₂O₄)₃] dh rS;kjh

d) gsDlk,sehu fufdy (II) DyksjkbM] [Ni(NH₃)₆]Cl₂ dh rS;kjhA

e) VsVªk,sehud‚ij (II) lYQsV] [Cu(NH₃)₄]SO₄ dh rS;kjhA

f) lksfM;e ukbVªksçqlkbM] [Na₂ [Fe(CN)₅(NO)] dh rS;kjhA

2) d‚EIysDlksesfVªd vuqekiu vkSj jaxfefr

a) fdlh fn, x, foy;u ls d‚ij lYQsV@d‚ij vk;u dk jaxfefr }kjk vk¡dyuA

b) ty@feV~Vh ds fn, x, uewus esa Q‚LQsV vk;u] (PO₄)^3– dk jaxekih }kjk vk¡dyuA

c) EDTA }kjk d‚EIysDlksesfVªd vuqekiu

i) fn, x, ty ds uewus esa Ca²⁺/ Mg²⁺ dk vk¡dyuA

ii) fn, x, ty ds uewus ls dqy dBksjrk dk vk¡dyuA