What Shape Does CS2 Have?

CS2 has a Linear molecular geometry (AX2, linear) with a bond angle of 180°. The central carbon carries 2 bonding domain(s) and 0 lone pair(s) — 2 electron domains in total. Isoelectronic with co2 — the carbon has two domains and no lone pair.

Hybridisation is conventionally described as sp. Polarity: Nonpolar; the C=S dipoles cancel by symmetry.

1. Molecular Identity and Key Parameters

Molar mass is the average value rounded for procurement use. Hybridisation labels are the conventional VSEPR-level description; orbital treatment becomes more nuanced at higher levels of theory.

2. Drawing the Lewis Structure of CS2, Step by Step

1. Count valence electrons: 4 (C) + 2×6 (S) = 16 — a total of 16 electrons (8 pairs) must be placed.
2. Build the skeleton: place the carbon at the centre and attach the terminal atoms with single bonds; hydrogen is never a central atom. Each single bond consumes 2 electrons.
3. Complete terminal octets: distribute the remaining electrons as lone pairs on the terminal atoms first (hydrogens already carry their duet from the single bond).
4. Satisfy the central atom: S=C=S: two double bonds, each sulfur with two lone pairs.
5. Verify: Octet satisfied on all three atoms. Apply the standard formal-charge check (valence − nonbonding − half of bonding electrons) to confirm the drawn form.

A worked diagram of this molecule is kept in the companion guide: CS2 Lewis structure.

3. VSEPR Analysis: Why CS2 Is linear

VSEPR theory counts electron domains — every σ bond counts once regardless of bond order, and every lone pair counts once. CS2 has 2 such domains around the carbon: 2 bonding and 0 lone. 2 domains correspond to a linear electron-domain arrangement; with no lone pair to hide the observed molecular shape is linear (AX2).

Bond angle: 180° because isoelectronic with CO2 — the carbon has two domains and no lone pair.

Polarity: Nonpolar; the C=S dipoles cancel by symmetry.

4. The Most Common Mistake When Drawing CS2

5. Why the Geometry Matters in Practice

Viscose rayon manufacture and dithiocarbamate intermediates; extreme flammability dominates its handling and transport spec.

Structure-level identity is exactly what a purchase order has to fix: the same molecular formula can hide isomers, hydrates or salt forms with different handling profiles. Before ordering, match CAS (75-15-0), assay, water content and container rating against the datasheet, and request the COA batch that will ship.

Compare Carbon Disulfide (CS2) supply offers →

6. Quick FAQs on CS2

7. References

1. IUPAC / Gillespie, Assessment of the VSEPR model. Basis of AXE notation and lone-pair ordering. VSEPR entry
2. PubChem compound record for Carbon Disulfide (CS2). Registry number, formula and computed descriptors. PubChem 75-15-0
3. Companion Lewis-structure guide on this site. Worked diagram for CS2. Lewis structure CS2