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Design, syntheses and characterizations of new functionalized tricarbadecaborane anion ligands and their transition metal coordination chemistry.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Design, syntheses and characterizations of new functionalized tricarbadecaborane anion ligands and their transition metal coordination chemistry.
Author:	Ramachandran, Bhaskar Maharajapuram.
Description:	448 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-04, Section: B, page: 1731.
Notes:	Supervisor: Larry G. Sneddon.
Contained By:	Dissertation Abstracts International64-04B.
Subject:	Chemistry, Inorganic.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3087453
ISBN:	0496352237

Design, syntheses and characterizations of new functionalized tricarbadecaborane anion ligands and their transition metal coordination chemistry.
Ramachandran, Bhaskar Maharajapuram.

Design, syntheses and characterizations of new functionalized tricarbadecaborane anion ligands and their transition metal coordination chemistry. [electronic resource] - 448 p.

Source: Dissertation Abstracts International, Volume: 64-04, Section: B, page: 1731.

Thesis (Ph.D.)--University of Pennsylvania, 2003.

Preliminary studies on 1-(eta5-C5H5 )-1-Br-2-Ph-closo-1,2,3,4-VC3B7H 9 and commo-Nb-1-Cl-(4-Me-closo-1,2,3,4-NbC 3B7H9)2 revealed these compounds to be effective cytotoxic agents against murine and human leukemia and lymphoma growth as well as HeLa suspended uterine carcinoma.

ISBN: 0496352237Subjects--Topical Terms:

197298
Chemistry, Inorganic.

Design, syntheses and characterizations of new functionalized tricarbadecaborane anion ligands and their transition metal coordination chemistry.
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100 0 $a Ramachandran, Bhaskar Maharajapuram. $3 227037
245 1 0 $a Design, syntheses and characterizations of new functionalized tricarbadecaborane anion ligands and their transition metal coordination chemistry. $h [electronic resource]
300 $a 448 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-04, Section: B, page: 1731.
500 $a Supervisor: Larry G. Sneddon.
502 $a Thesis (Ph.D.)--University of Pennsylvania, 2003.
520 # $a Preliminary studies on 1-(eta5-C5H5 )-1-Br-2-Ph-closo-1,2,3,4-VC3B7H 9 and commo-Nb-1-Cl-(4-Me-closo-1,2,3,4-NbC 3B7H9)2 revealed these compounds to be effective cytotoxic agents against murine and human leukemia and lymphoma growth as well as HeLa suspended uterine carcinoma.
520 # $a The goal of the research presented in this dissertation was to design and synthesize new functionalized tricarbadecaborane anion ligands, explore their transition metal coordination chemistry and their similarities with pi-coordinating ligands like the organic cyclopentadienyl ligand.
520 # $a The systematic one carbon insertion reaction of different nitrile compounds with arachno-6,8-C2B7H12 - yielded a series of monoanionic tricarbadecaborane ligands, (6-R-nido-5,6,9-C3B7H9) -, [R = Ph, (CH2)4CN, BrC6H 4OSiMe3CH, BH3NMe2(CH2) 2, and C14H11]. These ligands were successfully employed to produce a series of metallatricarbadecaboranyl analogs of ferrocene having the general formula 1-(eta5-C5H5)-2-R- closo-1,2,3,4-FeC3B7H9. The inability of the 6-Ph-nido-5,6,9-C3B7H9 - ligand to form bis-cage complexes and the absence of cage-isomerization made it a more efficient and selective ligand than the previous 6-Me-nido-5,6,9-C3B7H 9- anion, giving higher yields and single products in its reaction with transition metals.
520 # $a The tricarbadecaboranyl anions, (6-R-nido-5,6,9-C 3B7H9)-, [R = Ph, Me] have been employed to produce a series of metallatricarbadecaboranyl analogs of the group VIII metallocenes. Electrochemical studies revealed that RC 3B7H9 analogs of Cp metal complexes were oxidatively more stable and underwent facile reduction reactions. Reaction of 1-(eta 5-C5H5)-2-Ph-closo-1,2,3,4-FeC 3B7H9 with Cr(CO)6 resulted in the formation of the arene-substituted complex 1-(eta5-C 5H5)-2-[(eta6-C6H5)Cr(CO) 3]-closo-1,2,3,4-FeC3B7H 9. Complexes 1-(eta5-C10H15)-2-Me- closo-1,2,3,4-RuC3B7H9 and 1-(eta5-C5H5)-2-Ph-closo -1,2,3,4-FeC3B7H9 were found to undergo reversible cage-slippages between the eta6--eta 4 coordination modes during the association-dissociation reaction with t-BuNC to produce 8-(eta5-C5Me 5)-8-(CNBut)-9-Me-nido-8,7,9,10-RuC 3B7H9 and 8-(eta5-C5H 5)-8-(CNBut)-9-Ph-nido-8,7,9,10-FeC 3B7H9, respectively.
590 $a School code: 0175.
650 # 0 $a Chemistry, Inorganic. $3 197298
710 0 # $a University of Pennsylvania. $3 212781
773 0 # $g 64-04B. $t Dissertation Abstracts International
790 $a 0175
790 1 0 $a Sneddon, Larry G., $e advisor
791 $a Ph.D.
792 $a 2003
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