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Chemical Bonds (Coordinative (Spin-state of M (opposite spin (less stable)…
Chemical Bonds
Coordinative
Polar covalent interaction between TM and ligands
e- pair from the same atom
CN: 18 e- rule
LFT
DELTA (LFS)
Strenght of the ligands
electrostatic interaction
Empirical Row
covalent interaction
nephelauxetic effect
naked e-
Ligands interact with d states of TM
Spin-state of M
opposite spin
less stable
spin in different orbitals
more stable
Low
DELTA>Spin pairing energy
High
DELTA<Spin pairing energy
Jahn Teller distortion (PICTURE)
uneven occupation of degenerated state
Metallic
Extended overlap of diffusive orbitals
Solids
Low X
High mobility of e-
Covalent
Direct overlap
Lewis formula
Octect rule
Formal Charge
Symmetry
Share e- pairs
Ionic
Big DELTA X
Lattice energy
The greatest EL --> More stable
Born-Habe-Cycle
Formation of a crystal from separated atoms
EL = ECoulomb + Erepulsion
Ecoulomb
Madelung constant
attraction
E repulsion
Born factor