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  1. Article ; Online: Structural and Spectroscopic Studies of Steric and Electronic Substituent Effects in a Series of Magnesium Aminodiboranates Mg[(BH

    Caroff, Christopher M / Girolami, Gregory S

    Inorganic chemistry

    2023  Volume 62, Issue 7, Page(s) 3116–3122

    Abstract: ... The ... ...

    Abstract The magnesium
    Language English
    Publishing date 2023-02-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.2c03963
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  2. Article ; Online: Pathological crystal structures.

    Raymond, Kenneth N / Girolami, Gregory S

    Acta crystallographica. Section C, Structural chemistry

    2023  Volume 79, Issue Pt 11, Page(s) 445–455

    Abstract: Recent decades have seen enormous changes in the technology of crystal structure analysis, but the interpretation of these data still depends on human judgment, and errors are far from uncommon. Although analysing the crystallographic results with ... ...

    Abstract Recent decades have seen enormous changes in the technology of crystal structure analysis, but the interpretation of these data still depends on human judgment, and errors are far from uncommon. Although analysing the crystallographic results with available software tools can catch many types of errors, others can be detected only by combining knowledge of both crystallography and chemistry. We discuss several such examples from the published literature, and for each of them we identify what lessons they teach us. The examples are categorized by the type of error: correct crystallography but incorrect chemistry, mis-assignment of atoms, high-symmetry superstructures with included guest molecules, incorrect choice of space group, incorrect choice of unit-cell size, and unresolved problems. These examples are intended to counteract the aura of infallibility that crystal structures sometimes assume and to alert the reader to features to look for in detecting pathological structures.
    Language English
    Publishing date 2023-10-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 2025703-X
    ISSN 2053-2296 ; 1600-5759 ; 0108-2701
    ISSN (online) 2053-2296 ; 1600-5759
    ISSN 0108-2701
    DOI 10.1107/S2053229623007088
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  3. Article ; Online: Synthesis, Structure, and Properties of Volatile Lanthanide Dialkyltriazenides.

    Caroff, Christopher M / Girolami, Gregory S

    Inorganic chemistry

    2022  Volume 61, Issue 42, Page(s) 16740–16749

    Abstract: Several dialkyltriazenide complexes of the lanthanide elements neodymium, europium, and erbium have been prepared; these include the homoleptic complex Er( ... ...

    Abstract Several dialkyltriazenide complexes of the lanthanide elements neodymium, europium, and erbium have been prepared; these include the homoleptic complex Er(Bu
    Language English
    Publishing date 2022-10-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.2c02545
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  4. Article ; Online: Platinum(II) Di-ω-alkenyl Complexes as "Slow-Release" Precatalysts for Heat-Triggered Olefin Hydrosilylation.

    Liu, Sumeng / Girolami, Gregory S

    Journal of the American Chemical Society

    2021  Volume 143, Issue 42, Page(s) 17492–17509

    Abstract: We describe the synthesis, characterization, and catalytic hydrosilylation activity of platinum(II) di-ω-alkenyl compounds of stoichiometry ... ...

    Abstract We describe the synthesis, characterization, and catalytic hydrosilylation activity of platinum(II) di-ω-alkenyl compounds of stoichiometry PtR
    Language English
    Publishing date 2021-10-13
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.1c06846
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  5. Article: Platinum(II) Di-ω-alkenyl Complexes as “Slow-Release” Precatalysts for Heat-Triggered Olefin Hydrosilylation

    Liu, Sumeng / Girolami, Gregory S.

    Journal of the American Chemical Society. 2021 Oct. 13, v. 143, no. 42

    2021  

    Abstract: We describe the synthesis, characterization, and catalytic hydrosilylation activity of platinum(II) di-ω-alkenyl compounds of stoichiometry PtR₂, where R = CH₂SiMe₂(vinyl) (1) or CH₂SiMe₂(allyl) (2), and their adducts with 1,5-cyclooctadiene (COD), ... ...

    Abstract We describe the synthesis, characterization, and catalytic hydrosilylation activity of platinum(II) di-ω-alkenyl compounds of stoichiometry PtR₂, where R = CH₂SiMe₂(vinyl) (1) or CH₂SiMe₂(allyl) (2), and their adducts with 1,5-cyclooctadiene (COD), dibenzo[a,e]cyclooctatetraene (DBCOT), and norbornadiene (NBD), which can be considered as slow-release sources of the reactive compounds 1 and 2. At loadings of 0.5 × 10–⁶–5 × 10–⁶ mol %, 1-COD is an active hydrosilylation catalyst that exhibits heat-triggered latency: no hydrosilylation activity occurs toward many olefin substrates even after several hours at 20 °C, but turnover numbers as high as 200000 are seen after 4 h at 50 °C, with excellent selectivity for formation of the anti-Markovnikov product. Activation of the Ptᴵᴵ precatalyst occurs via three steps: slow dissociation of COD from 1-COD to form 1, rapid reaction of 1 with silane, and elimination of both ω-alkenyl ligands to form Pt⁰ species. The latent catalytic behavior, the high turnover number, and the high anti-Markovnikov selectivity are a result of the slow release of 1 from 1-COD at room temperature, so that the concentration of Pt⁰ during the initial stages of the catalysis is negligible. As a result, formation of colloidal Pt, which is known to cause side reactions, is minimized, and the amounts of side products are very small and comparable to those seen for platinum(0) carbene catalysts. The latent reaction kinetics and high turnover numbers seen for 1-COD after thermal triggering make this compound a potentially useful precatalyst for injection molding or solvent-free hydrosilylation applications.
    Keywords ambient temperature ; carbenes ; catalysts ; catalytic activity ; dissociation ; injection molding ; ligands ; olefin ; platinum ; reaction kinetics ; silane ; stoichiometry
    Language English
    Dates of publication 2021-1013
    Size p. 17492-17509.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.1c06846
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  6. Article: Microscale vacuum distillation apparatus for high-boiling, air- and heat-sensitive liquids

    Liu, Sumeng / Girolami, Gregory S

    Talanta. 2021 Feb. 01, v. 223

    2021  

    Abstract: We describe a simple apparatus that enables the vacuum distillation of ~0.2 mL of air- and water-sensitive, high-boiling liquids. The apparatus should be useful in teaching laboratories, and also to practicing chemists. ...

    Abstract We describe a simple apparatus that enables the vacuum distillation of ~0.2 mL of air- and water-sensitive, high-boiling liquids. The apparatus should be useful in teaching laboratories, and also to practicing chemists.
    Keywords chemists ; laboratories ; liquids ; thermosensitivity ; vacuum distillation
    Language English
    Dates of publication 2021-0201
    Publishing place Elsevier B.V.
    Document type Article
    Note NAL-light
    ZDB-ID 1500969-5
    ISSN 1873-3573 ; 0039-9140
    ISSN (online) 1873-3573
    ISSN 0039-9140
    DOI 10.1016/j.talanta.2020.121747
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  7. Article ; Online: Microscale vacuum distillation apparatus for high-boiling, air- and heat-sensitive liquids.

    Liu, Sumeng / Girolami, Gregory S

    Talanta

    2020  Volume 223, Issue Pt 2, Page(s) 121747

    Abstract: We describe a simple apparatus that enables the vacuum distillation of ~0.2 mL of air- and water-sensitive, high-boiling liquids. The apparatus should be useful in teaching laboratories, and also to practicing chemists. ...

    Abstract We describe a simple apparatus that enables the vacuum distillation of ~0.2 mL of air- and water-sensitive, high-boiling liquids. The apparatus should be useful in teaching laboratories, and also to practicing chemists.
    Language English
    Publishing date 2020-10-08
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 1500969-5
    ISSN 1873-3573 ; 0039-9140
    ISSN (online) 1873-3573
    ISSN 0039-9140
    DOI 10.1016/j.talanta.2020.121747
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  8. Article ; Online: Synthesis and Characterization of Divalent Samarium and Thulium

    Anderson, Nels T / Wright, Joseph C / Girolami, Gregory S

    Inorganic chemistry

    2021  Volume 60, Issue 15, Page(s) 11164–11176

    Abstract: The syntheses and molecular structures of new ... ...

    Abstract The syntheses and molecular structures of new Sm
    Language English
    Publishing date 2021-07-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.1c01139
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  9. Article ; Online: An osmium(II) methane complex: Elucidation of the methane coordination mode.

    Sempsrott, Peter J / Trinh, Brian B / Lovitt, Charity Flener / Capra, Nicolas E / Girolami, Gregory S

    Science advances

    2023  Volume 9, Issue 23, Page(s) eadg8130

    Abstract: The activation of inert C─H bonds by transition metals is of considerable industrial and academic interest, but important gaps remain in our understanding of this reaction. We report the first experimental determination of the structure of the simplest ... ...

    Abstract The activation of inert C─H bonds by transition metals is of considerable industrial and academic interest, but important gaps remain in our understanding of this reaction. We report the first experimental determination of the structure of the simplest hydrocarbon, methane, when bound as a ligand to a homogenous transition metal species. We find that methane binds to the metal center in this system through a single M···H-C bridge; changes in the
    MeSH term(s) Osmium ; Methane ; Ligands ; Metals
    Chemical Substances Osmium (2E7M255OPY) ; Methane (OP0UW79H66) ; Ligands ; Metals
    Language English
    Publishing date 2023-06-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.adg8130
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  10. Article ; Online: Three-Center M-H-B Bonds Are Strong Field Interactions. Synthesis and Characterization of M(CH

    Lastowski, R Joseph / Yarranton, Jonathan T / Zhu, Lingyang / Vogiatzis, Konstantinos D / Girolami, Gregory S

    Journal of the American Chemical Society

    2023  Volume 145, Issue 43, Page(s) 23585–23599

    Abstract: We describe new compounds of stoichiometry M( ... ...

    Abstract We describe new compounds of stoichiometry M(CH
    Language English
    Publishing date 2023-10-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.3c07336
    Database MEDical Literature Analysis and Retrieval System OnLINE

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