Mechanism — SN2 with inversion of configuration

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    { "id": "rate", "type": "line-chart", "label": "Rate = k[R–Br][HO⁻] — 2nd order", "x": 215, "y": 360, "width": 150, "height": 104, "fill": "#e0f2fe", "stroke": "#0369a1" },
    { "id": "ts", "type": "star", "label": "Transition state — C bonded to both", "x": 390, "y": 40, "width": 150, "height": 104, "fill": "#fef3c7", "stroke": "#a16207", "bold": true },
    { "id": "conc", "type": "rounded", "label": "One concerted step, no intermediate", "x": 390, "y": 200, "width": 150, "height": 104, "fill": "#f1f5f9", "stroke": "#475569" },
    { "id": "umbrella", "type": "cone", "label": "Umbrella flip of the other groups", "x": 390, "y": 360, "width": 150, "height": 104, "fill": "#f1f5f9", "stroke": "#475569" },
    { "id": "lg", "type": "ellipse", "label": "Br⁻ departs as C–O forms", "x": 565, "y": 200, "width": 150, "height": 104, "fill": "#fee2e2", "stroke": "#b91c1c" },
    { "id": "steric", "type": "bar-chart", "label": "Steric order CH₃ > 1° > 2° ≫ 3°", "x": 565, "y": 360, "width": 150, "height": 104, "fill": "#e0f2fe", "stroke": "#0369a1" },
    { "id": "prod", "type": "flask", "label": "(R)-butan-2-ol", "x": 740, "y": 40, "width": 150, "height": 104, "fill": "#dcfce7", "stroke": "#15803d", "bold": true },
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    { "id": "e2", "source": "sub", "target": "approach", "label": "electrophilic C", "thickness": 2.5 },
    { "id": "e3", "source": "solvent", "target": "approach", "label": "leaves HO⁻ unsolvated", "style": "dashed" },
    { "id": "e4", "source": "approach", "target": "ts", "thickness": 2.5 },
    { "id": "e5", "source": "ts", "target": "conc", "style": "dashed" },
    { "id": "e6", "source": "ts", "target": "umbrella", "style": "dashed" },
    { "id": "e7", "source": "ts", "target": "lg", "label": "C–Br breaks" },
    { "id": "e8", "source": "ts", "target": "prod", "thickness": 2.5 },
    { "id": "e9", "source": "prod", "target": "walden", "label": "S becomes R", "style": "dashed" },
    { "id": "e10", "source": "conc", "target": "rate", "label": "both species in the RDS", "style": "dashed" },
    { "id": "e11", "source": "steric", "target": "ts", "label": "crowding raises Eₐ", "style": "dashed" },
    { "id": "e12", "source": "steric", "target": "tertiary" }
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