Lec-38-Chap22-2-b

Lec-38-Chap22-2-b - Lec-38-Chap22-2-b 12/4/2009 Lec-38:...

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Lec-38-Chap22-2-b 12/4/2009 Transition Metal Coordination Compounds. Naming. Geometry. Coordination Number. Charge of the Transition Metal Ion 1 Lec-38: Chemistry of Transition Elements and Coordination Compounds Chapter 22 1 The Fall-07 and Fall-08 final exams have been posted in Blackboard. Please print them out, solve them, and bring your questions to your workshop for the course review next week. p.1046a 2
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Lec-38-Chap22-2-b 12/4/2009 Transition Metal Coordination Compounds. Naming. Geometry. Coordination Number. Charge of the Transition Metal Ion 2 Transition Metals and Coordination Compounds Much of the chemistry of d -block transition metals is due to their ability (because they have vacant d-atomic orbitals) to make coordinate covalent bonds with molecules and ions that have lone-pair electrons. Coordinate covalent bond: formed by the donation of an electron-pair from an atom to an empty orbital on another atom. H N H H + H + H N H H H + or H N H H H + 3 Transition Metals and Coordination Compounds For example in aqueous solution Ni 2+ is coordinated by water molecules in an octahedral configuration: Complex Ion [Ni(H 2 O) 6 ] 2+ hexaaquanickel(II) The molecules or ions coordinated to the central atom are called ligands 4
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Lec-38-Chap22-2-b 12/4/2009 Transition Metal Coordination Compounds. Naming. Geometry. Coordination Number. Charge of the Transition Metal Ion 3 Transition Metals and Coordination Compounds Compounds that contain metal ions surrounded by ligands are called coordination compounds . Coordination compounds are combined with opposite charged ions (counterions) to form neutral compounds.
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Lec-38-Chap22-2-b - Lec-38-Chap22-2-b 12/4/2009 Lec-38:...

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