Gallaborane, H2Ga(µ-H)2BH2: synthesis, properties, and structure of the gaseous molecule as determined by electron diffraction

Pulham, Colin R.; Brain, Paul T.; Downs, Anthony J.; Rankin, David W. H.; Robertson, Heather E.

doi:10.1039/c39900000177

Cited by 42 publications

(50 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The solid has a melting point of about 228 K and a vapor pressure at 195 K in the order of 1 torr; decomposition to the metal occurs above 238 K. Although the predominant vapor species is the diborane-like H,Ga(p-H),BH, ,I6] aggregation of these molecules undoubtedly occurs in the condensed phases. Solutions in toluene or methyl- [1.86(7) A] and a weaker, secondary contact through H11 to Ga2 [2.41 (6) A]. The BH, unit based on B2, which, like Ga2, lies on a twofold axis, is highly unusual in that it links two adjacent metal centers through single hydrogen bridges (through H22 and H22', Gal -H22 1.87(7) A).…”

mentioning

confidence: 99%

Helical, Polymeric Chains in Crystalline Gallaborane [GaBH₆]_n at 110 K

Downs¹,

Parsons

Pulham

et al. 1997

Angew. Chem. Int. Ed. Engl.

Self Cite

View full text Add to dashboard Cite

Distorted tetrahedral GaH4 and tetrahedral BH4 moieties are the building blocks of the helical, polymeric chains formed by gallaborane at 110 K (schematically shown on the right). There are two distinct types of BH4 groups: one is involved in Ga(μ‐H)2B coordination and the other in unusual monohydrogen bridging of two adjacent GaH2 units. The structure invites comparison with those of other main group hydrides.

show abstract

mentioning

confidence: 99%

Helical, Polymeric Chains in Crystalline Gallaborane [GaBH₆]_n at 110 K

Downs¹,

Parsons

Pulham

et al. 1997

Angew. Chem. Int. Ed. Engl.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Complex 2 is an unprecedented example of N→Ga II coordinated hydride containing a Ga–Ga bond. Structurally characterized gallium hydrides LGaH 2 , (2,4,6‐ t Bu 3 –C 6 H 2 )GaH 2 or (2,6‐Mes 2 C 6 H 3 ) 2 GaH showed monomeric character, while others are confirmed to be dimers without any Ga–Ga bond: [{(2,6‐Diip 2 C 6 H 3 )}(H)Ga(µ‐H)] 2 , [(2,6‐Trip 2 C 6 H 3 ) 2 Ga(µ‐H)] 2 , [Me 2 Ga(µ‐H)] 2 , or [H 2 Ga(µ‐H) 2 BH 2 ] . All these complexes have the gallium atom in the formal oxidation state of +III.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of N→Ga Coordinated Gallium(II)–Gallium(II) Compounds

et al. 2018

View full text Add to dashboard Cite

Synthesis of the N→Ga coordinated gallium(II)gallium(II) compounds containing the N,C,N-chelating ligand L [L: {2,6-(Me 2 NCH 2 ) 2 C 6 H 3 } -] is reported. Attempts to stabilize the subvalent digallene [LGa] 2 by reduction of [L(Cl)Ga] 2 (1) or by Recent studies also showed that the stabilization of 14 and 15 main group elements in oxidation state +I can be accompanied by the utilization of Y,C,Y-chelating ligands. [8] To the best of our knowledge, the field of subvalent derivatives of group 13 metals containing the pincer type ligand is practically unexplored. In 1994 A. H. Cowley reported the stabilization of LM{Co(CO) 4 } 2 [M = Ga, In, L is {2,6-(Me 2 NCH 2 ) 2 C 6 H 3 } -] by the substitution reaction of LMCl 2 with NaCo(CO) 4 . [9] In 1998, the same group synthesized indium(II)-indium(II) compound [L(Cl)In] 2 by the reduction of LInCl 2 with the dilithium salt of diisopropylaminoborole. [10] These facts lead us to extend the current knowledge of subvalent derivatives of group 13 metals stabilized by N,C,N-chelating ligand L.[a] 1620 hydrogen elimination from [L(H)Ga] 2 (2) failed, but an unexpected complex, [L(C 6 H 5 CH 2 )Ga] 2 (3), was isolated. It is possibly the product of the reaction of the parent digallene [LGa] 2 with toluene. Results and DiscussionComplex LGaCl 2 was prepared according to the literature procedure, [11] and its reaction with KC 8 provided gallium(II)-gallium(II) compound [L(Cl)Ga] 2 (1; Scheme 1). Scheme 1. Synthesis of compound [L(Cl)Ga] 2 (1).

show abstract

“…Homoleptic gallium borohydride does not exist. However, the related compounds, GaH ( BH 4 ) 2 and GaH 2 ( BH 4 ), were reported in [ 189 , 190 ]. GaH(BH 4 ) 2 can be produced in the absence of solvent at 228 K with an excess of LiBH 4 [ 189 , 191 , 192 ]: GaCl 3 + 3LiBH 4 → GaH(BH 4 ) 2 + 3LiCl + ½ B 2 H 6 , 228 K or HGaCl 2 + 2LiBH 4 → GaH(BH 4 ) 2 + 2LiCl, 228 K …”

Section: Main-group Borohydridesmentioning

confidence: 99%

Metal Borohydrides beyond Groups I and II: A Review

Suárez‐Alcántara

García

2021

Materials

View full text Add to dashboard Cite

This review consists of a compilation of synthesis methods and several properties of borohydrides beyond Groups I and II, i.e., transition metals, main group, lanthanides, and actinides. The reported properties include crystal structure, decomposition temperature, ionic conductivity, photoluminescence, etc., when available. The compiled properties reflect the rich chemistry and possible borohydrides’ application in areas such as hydrogen storage, electronic devices that require an ionic conductor, catalysis, or photoluminescence. At the end of the review, two short but essential sections are included: a compilation of the decomposition temperature of all reported borohydrides versus the Pauling electronegativity of the cations, and a brief discussion of the possible reactions occurring during diborane emission, including some strategies to reduce this inconvenience, particularly for hydrogen storage purposes.

show abstract

Gallaborane, H₂Ga(µ-H)₂BH₂: synthesis, properties, and structure of the gaseous molecule as determined by electron diffraction

Cited by 42 publications

References 14 publications

Helical, Polymeric Chains in Crystalline Gallaborane [GaBH₆]_n at 110 K

Helical, Polymeric Chains in Crystalline Gallaborane [GaBH₆]_n at 110 K

Synthesis of N→Ga Coordinated Gallium(II)–Gallium(II) Compounds

Metal Borohydrides beyond Groups I and II: A Review

Contact Info

Product

Resources

About

Gallaborane, H2Ga(µ-H)2BH2: synthesis, properties, and structure of the gaseous molecule as determined by electron diffraction

Cited by 42 publications

References 14 publications

Helical, Polymeric Chains in Crystalline Gallaborane [GaBH6]n at 110 K

Helical, Polymeric Chains in Crystalline Gallaborane [GaBH6]n at 110 K

Synthesis of N→Ga Coordinated Gallium(II)–Gallium(II) Compounds

Metal Borohydrides beyond Groups I and II: A Review

Contact Info

Product

Resources

About

Gallaborane, H₂Ga(µ-H)₂BH₂: synthesis, properties, and structure of the gaseous molecule as determined by electron diffraction

Helical, Polymeric Chains in Crystalline Gallaborane [GaBH₆]_n at 110 K

Helical, Polymeric Chains in Crystalline Gallaborane [GaBH₆]_n at 110 K