from typing import Dict


def get_default_molecular_config() -> Dict:
    """Get a default molecular configuration (LiH)."""
    problem_config = {
        "ion_pos": ((0.0, 0.0, -1.5069621), (0.0, 0.0, 1.5069621)),
        "ion_charges": (1.0, 3.0),
        "nelec": (2, 2),
    }
    return problem_config