You are watching: Why can sulfur make 6 bonds
boost this inquiry
edited Jun 5 "19 in ~ 1:46
99855 silver- badges1515 bronze title
request Jun 5 "19 at 1:02
13111 silver- badge33 bronze title
| present 2 much more comments
2 answers 2
active oldest Votes
Neither oxygen nor sulfur "expands its octet". Instead, sulfur in link such together $ceSF6$ delocalizes the bonds developed with the usual octet end multiple linkages. As defined in this answer, this delocalization in a neutral molecule comes v occupying ligand-based orbitals the are about nonbonding v a large main atom, yet antibonding through a small main atom since of ligand-ligand interactions. Thus developing a compound v delocalized bonding and also increased coordination number is more favored for third duration elements 보다 for second duration elements.
We can obtain such coordination through second-period elements if the ligand-based orbitals provided above space unoccupied, because that then the net ligand-ligand overlaps through the continuing to be orbitals are bonding. This usually calls for a cationic species such together the six-coordinate carbon complex reported through Yamaguchi et al.<1>, pictured listed below from the reference.
See more: Đá Thạch Anh Màu Nào Tốt Nhất, Năng Lượng Cao Nhất? Đá Thạch Anh
1.Torahiko Yamaguchi, Yohsuke Yamamoto, Daisuke Kinoshita, Kin-ya Akiba, Yun Zhang, Christopher A. Reed, Daisuke Hashizume, and Fujiko Iwasaki. "Synthesis and Structure the a Hexacoordinate Carbon Compound", J. Am. Chem. Soc. 2008, 130, 22, 6894–6895. Https://doi.org/10.1021/ja710423d