A compound containing two tantalum atoms in oxidation states separated by six units

F. Albert Cotton; Carlos A. Murillo; Xiaoping Wang

doi:10.1016/S0020-1693(99)00416-8

A compound containing two tantalum atoms in oxidation states separated by six units

F. Albert Cotton, Carlos A. Murillo, Xiaoping Wang

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Reaction of [Et₄N][Ta(CO)₆] (1) and Hhpp, Hhpp = 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine, gives a mixed-valent tantalum compound [Ta(hpp)₄][Ta(CO)₆] (2). It contains the eight-coordinate Ta(V) cation [Ta(hpp)₄]⁺, accompanied by the homoleptic hexacarbonyltantalate(-I) anion from the starting material. Thus, the oxidation numbers for the tantalum atoms span a range of six units. This is the first complex containing four chelating hpp anions. Crystal structures of 1, 2 and [Ph₄P][Ta(CO)₆] (3) were determined by X-ray crystallography. (C) 2000 Elsevier Science S.A.

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	Inorganica Chimica Acta
Volume	300-302
DOIs	https://doi.org/10.1016/S0020-1693(99)00416-8
State	Published - Apr 30 2000
Externally published	Yes

Funding

We are grateful for financial support from the National Science Foundation.

Funders	Funder number
National Science Foundation

Keywords

Crystal structures
Hexacarbonyltantalate anion
Low-valent
Tantalum complexes

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10.1016/S0020-1693(99)00416-8

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title = "A compound containing two tantalum atoms in oxidation states separated by six units",

abstract = "Reaction of [Et4N][Ta(CO)6] (1) and Hhpp, Hhpp = 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine, gives a mixed-valent tantalum compound [Ta(hpp)4][Ta(CO)6] (2). It contains the eight-coordinate Ta(V) cation [Ta(hpp)4]+, accompanied by the homoleptic hexacarbonyltantalate(-I) anion from the starting material. Thus, the oxidation numbers for the tantalum atoms span a range of six units. This is the first complex containing four chelating hpp anions. Crystal structures of 1, 2 and [Ph4P][Ta(CO)6] (3) were determined by X-ray crystallography. (C) 2000 Elsevier Science S.A.",

keywords = "Crystal structures, Hexacarbonyltantalate anion, Low-valent, Tantalum complexes",

author = "Cotton, {F. Albert} and Murillo, {Carlos A.} and Xiaoping Wang",

year = "2000",

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doi = "10.1016/S0020-1693(99)00416-8",

language = "English",

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journal = "Inorganica Chimica Acta",

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T1 - A compound containing two tantalum atoms in oxidation states separated by six units

AU - Cotton, F. Albert

AU - Murillo, Carlos A.

AU - Wang, Xiaoping

PY - 2000/4/30

Y1 - 2000/4/30

N2 - Reaction of [Et4N][Ta(CO)6] (1) and Hhpp, Hhpp = 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine, gives a mixed-valent tantalum compound [Ta(hpp)4][Ta(CO)6] (2). It contains the eight-coordinate Ta(V) cation [Ta(hpp)4]+, accompanied by the homoleptic hexacarbonyltantalate(-I) anion from the starting material. Thus, the oxidation numbers for the tantalum atoms span a range of six units. This is the first complex containing four chelating hpp anions. Crystal structures of 1, 2 and [Ph4P][Ta(CO)6] (3) were determined by X-ray crystallography. (C) 2000 Elsevier Science S.A.

AB - Reaction of [Et4N][Ta(CO)6] (1) and Hhpp, Hhpp = 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine, gives a mixed-valent tantalum compound [Ta(hpp)4][Ta(CO)6] (2). It contains the eight-coordinate Ta(V) cation [Ta(hpp)4]+, accompanied by the homoleptic hexacarbonyltantalate(-I) anion from the starting material. Thus, the oxidation numbers for the tantalum atoms span a range of six units. This is the first complex containing four chelating hpp anions. Crystal structures of 1, 2 and [Ph4P][Ta(CO)6] (3) were determined by X-ray crystallography. (C) 2000 Elsevier Science S.A.

KW - Crystal structures

KW - Hexacarbonyltantalate anion

KW - Low-valent

KW - Tantalum complexes

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U2 - 10.1016/S0020-1693(99)00416-8

DO - 10.1016/S0020-1693(99)00416-8

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SN - 0020-1693

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EP - 6

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

ER -

A compound containing two tantalum atoms in oxidation states separated by six units

Abstract

Funding

Keywords

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