def calc_k_neg1(T_K):
    """
    Calculates k1- kinetic constant from Table 1 of Kaufmann and Dreybrodt (2007).

    Parameters
    ----------
    T_K : float
       temperature Kelvin

    Returns
    -------
    k_neg1 : float
       kinetic constant k1-

    Notes
    -----
    Related to the rate of CO2 conversion.
    """
    k_neg1 = 10.**(13.558 - 3617.1/T_K)
    return k_neg1