Coordination Compounds

Complexes (ML5) of metals Ni and Fe have
ideal square pyramidal and trigonal
bipyramidal grometries, respectively. The sum
of the 90°, 120° and 180° L-M-L angles in the
two complexes is ________.

The correct order of the calculated spin-only
magnetic moments of complexs (A) to (D) is:
(A) Ni(CO)4
(B) [Ni(H2O)6]Cl2
(C) Na2[Ni(CN)4]
(D) PdCl2(PPh3)2

The theory that can completely/properly explain the nature of bonding in [Ni(Co)4] is :

The IUPAC name of complex [Pt(NH3)2Cl(NH2CH3)]Cl is:

The number of possible optical isomers for the complexes MA2B2 with sp3 and dsp2 hydridized metal atom. respectively, is :
Note : A and B are unidentate netural and unidentate monoanionic ligands, respectively.

Among the statements(a)-(d) the incorrect ones are :
(a) Octahedral CO(III) complexes with strong fields ligands have very high magnetic moments.
(b) When \(\Delta\)0 < P, the d-electron configuration of Co(III) in an octahedral complex is...

The species that has a spin-only magnetic
moment of 5.9 BM, is :
(Td = tetrahedral)

For a d4 metal ion in an octahedral field, the
correct electronic configuration is :

The values of the crystal field stabilization
energies for a high spin d6 metal ion in
octahedral and tetrahedral fields, respectively,
are :

The total number of coordination sites in ethylenediaminetetraacetate (EDTA4–) is _____.

Consider the complex ions,
trans-[Co(en)2Cl2]+ (A) and cis-[Co(en)2Cl2]+ (B).
The correct statement regarding them is :

Considering that \(\Delta\)0
> P, the magnetic moment (in BM) of [Ru(H2O)6]2+ would be _________.

The number of isomers possible for
[Pt(en)(NO2)2] is :

The pair in which both the species have the
same magnetic moment (spin only) is :

The one that can exhibit highest paramagnetic
behaviour among the following is :
gly = glycinato; bpy = 2, 2'-bipyridine

The Crystal Field Stabilization Energy
(CFSE) of [CoF3(H2O)3] (\(\Delta\)0 < P) is :

The molecule in which hybrid MOs involve only
one d-orbital of the central atom is :

The complex that can show optical activity is :

The electronic spectrum of [Ti(H2O)6]3+ shows a single broad peak with a maximum at 20,300 cm-1
.
The crystal field stabilization energy (CFSE) of the complex ion, in kJ mol-1, is :

Complex A has a composition of H12O6Cl3Cr. If the complex on treatment with conc.H2SO4
loses
13.5% of its original mass, the correct molecular formula of A is :
[Given: atomic mass of Cr = 52 amu and Cl = 35 amu]

The d-electron configuration of [Ru(en)3
]Cl2
and [Fe(H2O)6]Cl2
, respectively are :

For octahedral Mn(II) and tetrahedral Ni(II)
complexes, consider the following statements:
(I) both the complexes can be high spin.
(II) Ni(II) complex can very rarely be low spin.
(III) with strong field ligands, Mn(II) complexes
can be lo...

Consider that a d6 metal ion (M2+) forms a
complex with aqua ligands, and the spin only
magnetic moment of the complex is 4.90 BM.
The geometry and the crystal field stabilization
energy of the complex is

The oxidation states of iron atoms in
compounds (A), (B) and (C), respectively, are x,
y and z. The sum of x, y and z is ________.
Na4[Fe(CN)5(NOS)]
       (A)
Na4[FeO4]
       (B)
[Fe2(CO)9]
       (C)

The one that is not expected to show isomerism
is :

Simplified absorption spectra of three
complexes ((i), (ii) and (iii)) of Mn+ ion are
provided below; their \(\lambda\)max values are marked
as A, B and C respectively. The correct match
between the complexes and their \(\lambda\)max valu...

Two complexes [Cr(H2O)6]Cl3 (A) and [Cr(NH3)6]Cl3 (B) are violet and yellow coloured, respectively. The incorrect statement regarding them is :

The complex that has highest crystal field splitting energy (\(\Delta\)), is :

Homoleptic octahedral complexes of a metal ion 'M3+' with three monodenate ligands L1, L2 and L3 adsorb wavelenths in the region of green, blue and red respectively. The increasing order of the ligands strength is :

The degenerate orbitals of [Cr(H2O)6]3+ are :

The one that will show optical activity is :
(en = ethane-1,2-diamine)

The maximum possible denticities of a ligand
given below towards a common transition and
inner-transition metal ion, respectively, are :

The correct statements among I to III are :
(I) Valence bond theory cannot explain the
color exhibited by transition metal
complexes.
(II) Valence bond theory can predict
quantitatively the magnetic properties of
transtition metal complexes...

The correct order of the spin-only magnetic moment of metal ions in the following low-spin
complexes, [V(CN)6]4–,[Fe(CN)6]4–, [Ru(NH3)6]3+, and [Cr(NH3)6]2+ , is :

The following ligand is :

The compound that inhibits the growth of
tumors is :

The calculated spin-only magnetic moments
(BM) of the anionic and cationic species of
[Fe(H2O)6]2 and [Fe(CN)6], respectively, are :

Mn2(CO)10 is an organometallic compound due to the presence of -

The metal d-orbitals that are directly facing the ligands in K3[Co(CN)6] are -

The pair of metal ions that can give a spin only magnetic moment of 3.9 BM for the complex [M(H2O)6]Cl2, is -

The magnetic moment of an octahedral homoleptic Mn(II) complex is 5.9 BM. The suitable ligand for this complex is -

The complex ion that will lose its crystal field stabilization energy upon oxidation of its metal to +3 state is :

Complete removal of both the axial ligands (along the z-axis) from an octahedral complex leads to which of
the following splitting patterns? (relative orbital energies not on scale).

The coordination numbers of Co and Al in [Co(Cl)(en)2]Cl and K3[Al(C2O4)3], respectively, are :
(en = ethane-1, 2-diamine)

The compound used in the treatment of lead poisoning is :

Match the metals (column I) with the coordination compound(s)/enzyme(s) (column II)

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The number of bridging CO ligand(s) and Co-Co bond(s) in Co2(CO)8, respectively are :

The coordination number of Th in K4[Th(C2O4)4(OH2)2] is :
(C2O\({_4^{2 - }}\) = Oxalato)

The total number of isomers for a square planar complex [M(F)(Cl)(SCN)(NO2)] is

A reaction of cobalt (III) chloride and ethylenediamine in a 1 : 2 mole ratio generates two isomeric products A (violet coloured) and B (green coloured). A can show optical activity, but B is optically inactive. What
type of isomers does A ...