Liquid component for electrolytic capacitor, and electrolytic capacitor

The liquid component for an electrolytic capacitor contains a central atom and a ligand, the central atom is at least one type selected from boron, aluminum and silicon, and the ligand has a plurality of coordination atoms bonded to the central atom. The coordinating atom is at least one selected from the group consisting of oxygen and nitrogen, and is bonded to a carbon atom that does not have an oxo group. 电解电容器用液状成分包含中心原子和配体，所述中心原子为选自硼、铝及硅中的至少一种，所述配体具有与中心原子键合的多个配位原子。所述配位原子为选自氧及氮中的至少一种，并且与不具有氧代基的碳原子键合。