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The coordination number of a transition metal ion is always equal to the number of ligands the metal is capable of bonding with. True or False?
Wiki User
∙ 13y ago
False
Wiki User
∙ 13y ago
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What are multi dentate ligands?
the ligands which are capable of donating two or more pairs of electron in a complexation reaction
What does the term coordination number in ionic crystal refer to?
Coordination number refers to the number of ligands that surround a given atom in a crystal, such as a metal ion center.
What are pi acceptor ligand?
ligands which can accept electrons from the metal d orbital into there anti bonding orbital such as CO, or C=C
What does auxiliary valence mean?
This is an old term used by Werner (1866-1919) in a description of the bonding of transition metal complexes. As an example in the complex CoCl3.6NH3 he proposed that Co bonded to the 6 ammonia molecules using its "auxiliary" or secondary valence and to the chloride by its main valence. Up until then there was debate as to how Co with a valency of could attach 6 NH3 in addition to bonding with 3 Cl. This essentially the model that is now accepted and we term NH3 as ligands and the Co(NH3)63+ (now known to be octahedral) , as a complex of Co3+ Werner is sometimes called the father of coordination chemistry.
Why is the coordination number of be 4 and that of mg 6?
Be is smaller than Mg. The "coordination number" depends on the relative sizes of the central atom and the ones that are linked (chemists call them ligands) as to how many you can get. For the a give ligand the bigger the Central atom or ion the greater the number you can get round it.
What are multi dentate ligands?
the ligands which are capable of donating two or more pairs of electron in a complexation reaction
What is werner's theory?
Werner's theory, proposed by Alfred Werner in 1893, was the first attempt to explain the bonding in coordination compounds. It suggested that metal ions can form coordination complexes by donating electron pairs to coordinate covalent bonds with surrounding ligands. This theory laid the foundation for modern coordination chemistry.
What does the term coordination number in ionic crystal refer to?
Coordination number refers to the number of ligands that surround a given atom in a crystal, such as a metal ion center.
What is Tunaphos?
Tunaphos is a kind of chiral phosphorus ligands in asymmetric hydrogenation cataylzed by transition metals.
Why only transition elements are known to form pi-complexes?
Bonding in π-complexes is strongest when both the filled π-bonding orbital of the π-bonded ligand donates TO the metal and the empty π* orbital on the ligand can accept electron density FROM the metal. A metal with a partially-filled set of d orbitals is able to participate in this synergistic mode of bonding; main group atoms virtually never have filled pπ orbitals available for donating electron density to π-complexed ligand, hence this kind of complex occurs only with transition metals.
What has the author HP Lane written?
H.P Lane has written: 'Transition metal complexes of group fifteen donor ligands'
What are pi acceptor ligand?
ligands which can accept electrons from the metal d orbital into there anti bonding orbital such as CO, or C=C
What are complexing agent?
complexing agents are ligands that are capable forming complexes with metal ions by the formation of coordinate bond
What does auxiliary valence mean?
This is an old term used by Werner (1866-1919) in a description of the bonding of transition metal complexes. As an example in the complex CoCl3.6NH3 he proposed that Co bonded to the 6 ammonia molecules using its "auxiliary" or secondary valence and to the chloride by its main valence. Up until then there was debate as to how Co with a valency of could attach 6 NH3 in addition to bonding with 3 Cl. This essentially the model that is now accepted and we term NH3 as ligands and the Co(NH3)63+ (now known to be octahedral) , as a complex of Co3+ Werner is sometimes called the father of coordination chemistry.
What are the reactants and products ammonia?
Ammonia undergoes four types of reactions, 1- in water it forms Ammonium hydroxide, 2- with acids it forms Ammonium salts, 3- with transition metal it acts as ligands and forms coordination compounds and 4- during substitution reactions it forms derivatives or substitution products.
Why is the coordination number of be 4 and that of mg 6?
Be is smaller than Mg. The "coordination number" depends on the relative sizes of the central atom and the ones that are linked (chemists call them ligands) as to how many you can get. For the a give ligand the bigger the Central atom or ion the greater the number you can get round it.
What are the advantages of multidentate ligands over their unidentate counterparts?
multidentate ligands can be good chelating ligands compare to unidendate multidentate ligands bring better stability to the central metal
