HX addition and photochemical H2 elimination by Ni NHC complexes

Chang Hoon Lee; Timothy R. Cook; Daniel G. Nocera

doi:10.1021/ic102017t

HX addition and photochemical H₂ elimination by Ni NHC complexes

Chang Hoon Lee
, Timothy R. Cook
, Daniel G. Nocera

Chemistry

Massachusetts Institute of Technology

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

31 Scopus citations

Abstract

Ni(H)(X)(IMes)₂ was prepared by the addition of HX to Ni(IMes)₂ (X = Cl, Br; IMes = 1,3-dimesitylimidazol-2-ylidene).Ni(H) (Cl)- (IMes)₂ (1) was isolated from the reaction mixture of Ni(IMes)₂ and 2 equiv of 2,6-lutidine 3 HCl. Ni(H)(Br)(IMes) ₂ was prepared in a similar way. Although treatment of Ni(IMes) ₂ with a HCl₃ dioxane solution gives rise to a mixture of 1, NiCl₂(IMes)₂, and NiCl(IMes)₂, 1 was not isolable from the mixture. All three complexes cocrys- tallized. Photolysis of these nickel hydrides activates their Ni-H bonds by populating Ni-H δ* orbitals, which results in the formation of H₂. Treatment of 1 with HCl dioxane gives rise to H₂ and NiCl ₂(IMes)₂.

Original language	English
Pages (from-to)	714-716
Number of pages	3
Journal	Inorganic Chemistry
Volume	50
Issue number	3
DOIs	https://doi.org/10.1021/ic102017t
State	Published - Feb 7 2011

Access to Document

10.1021/ic102017t

Cite this

@article{d5beac9e773e40ba9099a2d0f63767c6,

title = "HX addition and photochemical H2 elimination by Ni NHC complexes",

abstract = "Ni(H)(X)(IMes)2 was prepared by the addition of HX to Ni(IMes)2 (X = Cl, Br; IMes = 1,3-dimesitylimidazol-2-ylidene).Ni(H) (Cl)- (IMes)2 (1) was isolated from the reaction mixture of Ni(IMes)2 and 2 equiv of 2,6-lutidine 3 HCl. Ni(H)(Br)(IMes) 2 was prepared in a similar way. Although treatment of Ni(IMes) 2 with a HCl3 dioxane solution gives rise to a mixture of 1, NiCl2(IMes)2, and NiCl(IMes)2, 1 was not isolable from the mixture. All three complexes cocrys- tallized. Photolysis of these nickel hydrides activates their Ni-H bonds by populating Ni-H δ* orbitals, which results in the formation of H2. Treatment of 1 with HCl dioxane gives rise to H2 and NiCl 2(IMes)2.",

author = "Lee, \{Chang Hoon\} and Cook, \{Timothy R.\} and Nocera, \{Daniel G.\}",

year = "2011",

month = feb,

day = "7",

doi = "10.1021/ic102017t",

language = "English",

volume = "50",

pages = "714--716",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "3",

}

TY - JOUR

T1 - HX addition and photochemical H2 elimination by Ni NHC complexes

AU - Lee, Chang Hoon

AU - Cook, Timothy R.

AU - Nocera, Daniel G.

PY - 2011/2/7

Y1 - 2011/2/7

N2 - Ni(H)(X)(IMes)2 was prepared by the addition of HX to Ni(IMes)2 (X = Cl, Br; IMes = 1,3-dimesitylimidazol-2-ylidene).Ni(H) (Cl)- (IMes)2 (1) was isolated from the reaction mixture of Ni(IMes)2 and 2 equiv of 2,6-lutidine 3 HCl. Ni(H)(Br)(IMes) 2 was prepared in a similar way. Although treatment of Ni(IMes) 2 with a HCl3 dioxane solution gives rise to a mixture of 1, NiCl2(IMes)2, and NiCl(IMes)2, 1 was not isolable from the mixture. All three complexes cocrys- tallized. Photolysis of these nickel hydrides activates their Ni-H bonds by populating Ni-H δ* orbitals, which results in the formation of H2. Treatment of 1 with HCl dioxane gives rise to H2 and NiCl 2(IMes)2.

AB - Ni(H)(X)(IMes)2 was prepared by the addition of HX to Ni(IMes)2 (X = Cl, Br; IMes = 1,3-dimesitylimidazol-2-ylidene).Ni(H) (Cl)- (IMes)2 (1) was isolated from the reaction mixture of Ni(IMes)2 and 2 equiv of 2,6-lutidine 3 HCl. Ni(H)(Br)(IMes) 2 was prepared in a similar way. Although treatment of Ni(IMes) 2 with a HCl3 dioxane solution gives rise to a mixture of 1, NiCl2(IMes)2, and NiCl(IMes)2, 1 was not isolable from the mixture. All three complexes cocrys- tallized. Photolysis of these nickel hydrides activates their Ni-H bonds by populating Ni-H δ* orbitals, which results in the formation of H2. Treatment of 1 with HCl dioxane gives rise to H2 and NiCl 2(IMes)2.

UR - https://www.scopus.com/pages/publications/79951621234

U2 - 10.1021/ic102017t

DO - 10.1021/ic102017t

M3 - Article

AN - SCOPUS:79951621234

SN - 0020-1669

VL - 50

SP - 714

EP - 716

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 3

ER -

HX addition and photochemical H₂ elimination by Ni NHC complexes

Abstract

Access to Document

Other files and links

Fingerprint

Cite this