координация 2 рк

Identify the cation in which the octahedral configuration is most distorted:

• [Ni(NH3)6]2+

• [Mn(NH3)6]2+

• [Fe(NH3)6]3+

• [Co(NH3)6]2+

Alkali metal cations form stable complexes with ...

• crown ethers,  cryptandes

• trilons

• polymethylenediamine

• multi-core arenas

The N(CH2COOH)3 compound has the common name ...

• Trilon A

• Trilon B

• Trilon C

• Trilon G

Find the correct sequence of halide anions in the spectrochemical series:

• J-<Br-<Cl-<F-

• Br-<J-<F-<Cl-

• Br-<J-<Cl-<F-

• J-<F-<Cl-<Br-

Cryptand- [2.1.1] binds sodium cations much more strongly than potassium. It's connected with…

• different radius of these ions, matching the size of the cavity of a cryptand to a cation

• different structure of the valence layer of these ions

• different polarizing action of these ions

• different coordination numbers of these ions

Cryptand- [2.1.1] binds calcium cations much more strongly than strontium. It's connected with…

• different radius of these ions, matching the size of the cavity of a cryptand to a cation

• different structure of the valence layer of these ions

• different polarizing action of these ions

• different coordination numbers of these ions

The stability of complexes of alkali metal cations with cryptands and crown ethers is determined by

• according to the size of the cavity to the radius of the ion

• the coincidence of the number of donor centers with a coordination number

• the degree of distortion of the valence angles

• the degree of polarization of donor centers

The stability of complexes of alkaline earth metal cations with cryptands and crown ethers is determined by

• according to the size of the cavity to the radius of the ion

• the coincidence of the number of donor centers with a coordination number

• the degree of distortion of the valence angles

• the degree of polarization of donor centers

Determine the bond order between rhenium atoms in the [Re2 Cl8]2- cluster

• 4

• 1

• 2

• 3

Clusters are called complexes in which it is realized ...

• metal-to-metal bond

• pi-acceptor interaction

• pi-donor Interaction

• chelate structure